The SAT Past Paper is a valuable resource for students preparing for the SAT exam. This article provides a detailed breakdown of the multiple-choice questions (MCQs) from the Reading and Writing and Math sections of the SAT Past Paper, along with their correct answers and explanations. Previous Year Exam Paper: This guide is perfect for students seeking to understand question patterns and improve their performance.
Question: Which word best completes the sentence about Ellen Ochoa’s prediction that humans will need to live in environments other than Earth?
Options: A) Demands, B) Speculates, C) Doubts, D) Establishes
Answer: B) Speculates
Explanation: The text describes Ochoa’s prediction as a conjecture without firm evidence, indicating she “speculates” (puts forward an idea). Choices A, C, and D are incorrect as they imply insistence, disbelief, or proof, which don’t align with the text’s context.
Question: Which word best describes Annie Dodge Wauneka’s continuous effort to promote public health as a Navajo Nation legislator?
Options: A) Impartial, B) Offhand, C) Persistent, D) Mandatory
Answer: C) Persistent
Explanation: Wauneka’s extensive travels and medical dictionary authorship show continuous effort, making “persistent” the best fit. Choices A, B, and D (impartial, casual, or required) don’t match the described dedication.
Question: Which word best describes how the Crow Tribe-Montana State University collaboration relates to community-based participatory research?
Options: A) Circumvents, B) Eclipses, C) Fabricates, D) Exemplifies
Answer: D) Exemplifies
Explanation: The collaboration serves as an example of community-based participatory research, making “exemplifies” correct. Choices A, B, and C (avoids, overshadows, or creates) don’t fit the context of illustrating a model.
Question: What term best describes the dodder plant and its host plant flowering in unison due to the dodder using a host’s protein?
Options: A) Synchronization, B) Hibernation, C) Prediction, D) Moderation
Answer: A) Synchronization
Explanation: The plants’ flowering together is described as “synchronization” (happening at the same time). Choices B, C, and D (dormancy, forecasting, or reducing intensity) don’t align with the text’s focus on simultaneous flowering.
Question: Which phrase best completes the statement about the lack of a simple explanation for planets in binary star systems?
Options: A) Discernible, B) Straightforward, C) Inconclusive, D) Unbiased
Answer: B) Straightforward
Explanation: The text notes the complexity of explaining planets in binary systems, suggesting no “straightforward” (simple) explanation exists. Choices A, C, and D (perceivable, unresolved, or impartial) don’t fit the context of complexity.
Question: Which word best describes Sterlin Harjo’s rejection of the typical depiction of Native characters on television?
Options: A) Repudiates, B) Proclaims, C) Foretells, D) Recants
Answer: A) Repudiates
Explanation: Harjo’s focus on modern Native teenagers rejects (repudiates) the tendency to depict them in the past. Choices B, C, and D (declares, predicts, or withdraws) don’t reflect this rejection.
Question: What is the primary purpose of the text about Luis von Ahn?
Options: A) Discuss his digitization work leading to reCAPTCHA, B) Explain digital scanner functionality, C) Describe his book-digitizing project, D) Assess reCAPTCHA’s popularity
Answer: A) Discuss his digitization work leading to reCAPTCHA
Explanation: The text focuses on how von Ahn’s digitization work led to the invention of reCAPTCHA. Choices B, C, and D are incorrect as they address unrelated or minor details.
Question: How does the underlined sentence about Lily’s perception of the landscape function in the text?
Options: A) Adds specific details, B) Suggests internal conflict, C) Expands on an assertion, D) Illustrates a previous idea
Answer: D) Illustrates a previous idea.
Explanation: The underlined sentence shows Lily’s awareness of the landscape reflecting her mood, illustrating the prior sentence’s claim. Choices A, B, and C don’t match the sentence’s role.
Question: How does the underlined sentence about Veeraraghavan’s team’s methodology function in the text?
Options: A) Summarizes findings, B) Provides examples, C) Explains methodology, D) Describes challenges
Answer: C) Explains methodology
Explanation: The underlined sentence details how the team analyzed data, explaining their methodology. Choices A, B, and D are incorrect as they don’t describe the sentence’s function.
Question: Which statement is true about Mother based on the text?
Options: A) Hopes for visitors, B) Prefers birthdays, C) Writes stories and poetry, D) Prefers reading to children
Answer: C) Writes stories and poetry
Explanation: The text confirms that Mother writes stories and poetry for her children. Choices A, B, and D are unsupported by the text.
Question: What is the primary purpose of the text about Paul Laurence Dunbar?
Options: A) Praise his perceptiveness, B) Discuss his reading, C) Describe his writing process, D) Recall an afternoon
Answer: A) Praise his perceptiveness
Explanation: The text praises Dunbar’s understanding of people and nature. Choices B, C, and D don’t reflect the text’s focus.
Question: Which quotation best supports the claim that Whitman’s poem suggests readers haven’t fully understood themselves?
Options: A) “Immense…interminable”, B) “You have not known what you are”, C) “Regret over not celebrating sooner”, D) “Hymns about readers”
Answer: B) “You have not known what you are”
Explanation: This quotation directly states the readers’ lack of self-understanding. Choices A, C, and D don’t address this claim.
Question: Which finding supports the claim that Chambl’s photographs have ethnographic value?
Options: A) Photographed diverse communities, B) Technical skill, C) Publication locations, D) Popularity among photographers
Answer: A) Photographed diverse communities
Explanation: Photographing diverse Peruvian communities supports the ethnographic value claim. Choices B, C, and D are irrelevant to the claim.
Question: Which finding supports the idea that film outputs of individuals are bare minimums?
Options: A) Dark Cloud’s fewer roles, B) Carewe’s roles after 1934, C) St. Cyr and Carewe’s credits, D) Young Deer’s fewer films
Answer: C) St. Cyr and Carewe’s credits
Explanation: St. Cyr’s 66 and Carewe’s 58 credits suggest higher outputs due to lost records. Choices A, B, and D don’t support the minimum output idea.
Question: Which finding supports the claim that plants gain an advantage growing near others?
Options: A) Less than 75% in patches, B) Greatest number in patches, C) Lower percentage in patches, D) Over 50% in patches
Answer: D) Over 50% in patches
Explanation: Over 50% of juvenile plants in patches (vs. 15% expected) supports the advantage claim. Choices A, B, and C are incorrect or weaken the claim.
Question: Which finding supports the hypothesis that plants depend on dissolving rock?
Options: A) Soil-inhabiting plants, B) Acid proportion differences, C) Dissolving rock despite spaces, D) Thriving on phosphate-free rocks
Answer: C) Dissolving rock despite spaces
Explanation: Dissolving rock despite existing spaces suggests a benefit (e.g., phosphorus access), supporting the hypothesis. Choices A, B, and D don’t help it.
Question: What conclusion follows from the text about sauropod body size and atmospheric carbon dioxide?
Options: A) Different effects on lineages, B) No dependence on carbon dioxide, C) Higher when the largest lived, D) Affected by higher levels
Answer: B) No dependence on carbon dioxide
Explanation: No carbon dioxide increase during size evolution suggests no dependence. Choices A, C, and D are unsupported.
Question: Which statement completes the discussion of Anita Allen’s argument about judges citing philosophers?
Options: A) Avoid philosophical works, B) Strengthen opinions with contrary views, C) Make opinions easier to understand, D) Align with popular views
Answer: B) Strengthen opinions with contrary views
Explanation: Allen suggests that citing opposing philosophers strengthens opinions. Choices A, C, and D don’t align with her argument.
Question: Which pronoun agrees with “customers”?
Options: A) It, B) They, C) You, D) One
Answer: B) They
Explanation: The plural pronoun “they” agrees with the plural “customers.” Choices A, C, and D are singular or inappropriate.
Question: Which punctuation is correct between the main clause and the participial phrase about Epicurus?
Options: A) Comma, B) Colon, C) Semicolon, D) No punctuation
Answer: A) Comma
Explanation: A comma correctly separates the main clause from the participial phrase. Choices B, C, and D create incorrect structures.
Question: Which possessive determiner agrees with “Watson and Crick”?
Options: A) They’re, B) It’s, C) Their, D) Its
Answer: C) Their
Explanation: The plural “their” agrees with the plural “Watson and Crick.” Choices A, B, and D are contractions or singular.
Question: Which punctuation is correct for “Stina Chyn” and the integrated quotation?
Options: A) Commas around name, B) Commas around name and quotation, C) No punctuation, D) Comma before quotation
Answer: C) No punctuation
Explanation: No punctuation is needed for the essential name or integrated quotation. Choices A, B, and D add unnecessary punctuation.
Question: Which verb form is correct for the main clause about historians?
Options: A) Claiming, B) Claim, C) Having claimed, D) To claim
Answer: B) Claim
Explanation: The finite verb “claim” suits the main clause. Choices A, C, and D are nonfinite and incorrect.
Question: Which punctuation correctly introduces the explanation about roundworms?
Options: A) Comma, B) Comma with “while,” C) No punctuation, D) Colon
Answer: D) Colon
Explanation: A colon introduces the explanation of roundworm movement. Choices A, B, and C create incorrect sentence structures.
Question: Which pronoun agrees with “turtle barnacles”?
Options: A) It, B) Themselves, C) Them, D) Itself
Answer: B) Themselves
Explanation: The plural reflexive “themselves” agrees with “turtle barnacles.” Choices A, C, and D are singular or unclear.
Question: Which verb agrees with “landing”?
Options: A) Allows, B) Are allowing, C) Have allowed, D) Allow
Answer: A) Allows
Explanation: The singular verb “allows” agrees with “landing.” Choices B, C, and D are plural.
Question: Which punctuation is correct for the clause about Hopper’s career?
Options: A) Comma and colon, B) Comma, C) Period, D) No punctuation
Answer: A) Comma and colon
Explanation: A comma and colon correctly separate the clauses and introduce the explanation. Choices B, C, and D create incorrect structures.
Question: Which placement is correct for the modifier about Henry’s recovery?
Options: A) Before “Henry,” B) Before “the reign,” C) Before “Henry’s reign,” D) Before “it”
Answer: A) Before “Henry”
Explanation: The modifier correctly modifies “Henry.” Choices B, C, and D create dangling modifiers.
Question: Which transition signals that The Emperor’s Babe exemplifies hybrid works?
Options: A) By contrast, B) Consequently, C) Secondly, D) For example
Answer: D) For example
Explanation: “For example” shows the novel as an example of hybrid works. Choices A, B, and C are illogical.
Question: Which transition signals the contrast between dogs and wolves?
Options: A) In other words, B) For instance, C) By contrast, D) Accordingly
Answer: C) By contrast
Explanation: “By contrast” highlights the difference between dogs and wolves. Choices A, B, and D are illogical.
Question: Which transition signals the rise in mathematicians’ collaboration?
Options: A) Similarly, B) For this reason, C) Furthermore, D) Increasingly
Answer: D) Increasingly
Explanation: “Increasingly” indicates a shift to collaboration. Choices A, B, and C don’t reflect the change.
Question: Which sentence presents the study and its findings about jawbones?
Options: A) Initial assessment, B) Study focus, C) Complete study and findings, D) Methodology and pterosaurs
Answer: C) Complete study and findings
Explanation: The sentence includes the study’s date, researcher, and findings. Choices A, B, and D are incomplete.
Question: Which sentence compares Hedgeman and Bates’s contributions to the march?
Options: A) Both contributed, B) Civil rights focus, C) Hedgeman’s planning vs. Bates’s speech, D) Both fought for rights
Answer: C) Hedgeman’s planning vs. Bates’s speech
Explanation: The sentence compares their specific roles. Choices A, B, and D don’t compare contributions.
Question: Which word best describes Jacob Lawrence’s attention to his neighborhood in his artwork?
Options: A) Skeptical, B) Observant, C) Critical, D) Confident
Answer: B) Observant
Explanation: Lawrence’s close attention to details reflects being “observant.” Choices A, C, and D (doubtful, fault-finding, or self-assured) don’t fit.
Question: Which phrase describes the effect of stingray age and sex on venom toxicity?
Options: A) Disconcerting, B) Acceptable, C) Imperceptible, D) Substantial
Answer: D) Substantial
Explanation: The research seeks “considerable variations,” indicating a “substantial” effect. Choices A, B, and C (unsettling, satisfactory, or unnoticeable) are incorrect.
Question: Which word describes the uncontrollable nature of diaphragm contractions causing hiccups?
Options: A) Involuntarily, B) Beneficially, C) Strenuously, D) Smoothly
Answer: A) Involuntarily
Explanation: The text describes contractions as “uncontrollable,” meaning “involuntarily.” Choices B, C, and D don’t match.
Question: Which word describes the critics’ view of the rare overlap between fine art and fashion?
Options: A) Prevail, B) Succumb, C) Diverge, D) Intersect
Answer: D) Intersect
Explanation: Critics believe fine art and fashion rarely “intersect” (overlap). Choices A, B, and C (triumph, surrender, or disagree) don’t fit.
Question: Which verb form correctly follows “would” in describing the lock’s action?
Options: A) Creates, B) Create, C) Creating, D) Created
Answer: B) Create
Explanation: The nonfinite “create” follows the modal “would.” Choices A, C, and D are incorrect verb forms.
Question: Which placement is correct for the modifier about commercial plastics?
Options: A) Before “there,” B) Before “two problems,” C) Before “problems,” D) Before “commercial plastics”
Answer: D) Before “commercial plastics”
Explanation: The modifier correctly describes “commercial plastics.” Choices A, B, and C create dangling modifiers.
Question: Which punctuation is correct for “Yuree Lee” and “plant cell biologist”?
Options: A) Comma before, B) Commas around, C) No punctuation, D) Commas after
Answer: C) No punctuation
Explanation: No punctuation is needed for the essential name. Choices A, B, and D are incorrect.
Question: Which transition signals that spiders’ climbing ability results from spatulae bonding?
Options: A) For instance, B) However, C) Similarly, D) As a result
Answer: D) As a result
Explanation: “As a result,” shows that the climbing ability stems from bonding. Choices A, B, and C are illogical.
Question: Which transition signals Sher-Gil’s longing to leave Paris, contrasting with expectations?
Options: A) Stir, B) Therefore, C) Indeed, D) Furthermore
Answer: A) Stir
Explanation: “Stir” indicates contrast with prior expectations. Choices B, C, and D are illogical.
Question: Which transition signals similarity between tea-selling activities for suffrage?
Options: A) For example, B) To conclude, C) Similarly, D) In other words
Answer: C) Similarly
Explanation: “Similarly” shows that the activities are alike. Choices A, B, and D are incorrect.
Question: Which sentence compares the lengths of the Channel and Seikan Tunnels?
Options: A) Generalization, B) Channel vs. Seikan, C) Single tunnel, D) Mentions both.
Answer: B) Channel vs. Seikan
Explanation: The sentence compares the tunnels’ lengths. Choices A, C, and D don’t compare.
Question: Which sentence explains and exemplifies “flauna”?
Options: A) Partial explanation, B) Full explanation with example, C) Explanation with title, D) Explanation with two titles
Answer: B) Full explanation with example
Explanation: The sentence defines “flauna” and gives an example (parrot with leaves). Choices A, C, and D are incomplete.
Question: Which sentence emphasizes the uniqueness of Taylor’s Civil War memoir?
Options: A) Describes accomplishments, B) Lists accomplishments, C) Mentions book, D) Highlights uniqueness
Answer: D) Highlights uniqueness
Explanation: The sentence notes the memoir’s unique status. Choices A, B, and C don’t emphasize uniqueness.
Question: What is 10% of 470?
Options: A) 37, B) 47, C) 423, D) 460
Answer: B) 47
Explanation: 10% of 470 is (10/100) × 470 = 47. Choices A, C, and D miscalculate.
Question: Which equation is equivalent to 4x + 6 = 18?
Options: A) Incorrect, B) Incorrect, C) 4x = 12, D) Incorrect
Answer: C) 4x = 12
Explanation: Subtracting six from both sides of 4x + 6 = 18 gives 4x = 12. Choices A, B, and D are incorrect.
Question: Which inequality represents a surfboard rental costing $25 plus $10 per hour, with a maximum of $75?
Options: A) Rental fee ≤ 75, B) Incorrect, C) Incorrect, D) 25 + 10t ≤ 75
Answer: D) 25 + 10t ≤ 75
Explanation: Total cost (25 + 10t) must be ≤ 75. Choice A ignores the service fee, and B and C are incorrect.
Question: If g(x) = x² + 9 and g(x) = 25, what is x?
Options: A) 4, B) Incorrect, C) Incorrect, D) Incorrect
Answer: A) 4
Explanation: Solving 25 = x² + 9 gives x² = 16, so x = ±4. Only four are listed.
Question: What is the probability of rolling a 2 on a 14-sided die?
Options: A) 1/14, B) 2/14, C) 12/14, D) 13/14
Answer: A) 1/14
Explanation: Probability is 1 (favorable outcome) ÷ 14 (total outcomes). Choices B, C, and D miscalculate.
Question: Which equation represents an assignment with x 1-point and y 3-point questions worth 70 points?
Options: A) Incorrect, B) Incorrect, C) Incorrect, D) x + 3y = 70
Answer: D) x + 3y = 70
Explanation: Total points are x + 3y = 70. Choices A, B, and C are incorrect.
Question: If angle M is 53° in triangle LMN, similar to PQR, what is angle Q?
Options: A) 37°, B) 53°, C) 127°, D) Incorrect
Answer: B) 53°
Explanation: Corresponding angles in similar triangles are congruent, so angle Q = 53°. Choices A, C, and D are incorrect.
Question: What is x in the system y = -3x, 4x + y = 15?
Options: A) Incorrect, B) Incorrect, C) 15, D) Incorrect
Answer: C) 15
Explanation: Substituting y = -3x into 4x + y = 15 gives x = 15. Choices A, B, and D are incorrect.
Question: Which linear model fits a scatterplot with decreasing y-values and a positive y-intercept?
Options: A) Negative intercept, B) y = -1.9x + 10.1, C) Positive slope, D) Positive slope
Answer: B) y = -1.9x + 10.1
Explanation: Negative slope (-1.9) and positive intercept (10.1) fit the scatterplot. Choices A, C, and D don’t match.
Question: How many values of x satisfy f(x) = 0 if the graph touches the x-axis at 3 points?
Options: A) 1, B) 2, C) 3, D) 4
Answer: C) 3
Explanation: Three x-axis touches mean three zeros. Choices A, B, and D are incorrect.
Question: If 300,000 cells double every 3 hours, how many are there after 15 hours?
Options: A) Incorrect, B) Incorrect, C) Incorrect, D) 9,600,000
Answer: D) 9,600,000
Explanation: Using y = 300,000(2)^(x/3), for x = 15, y = 9,600,000. Choices A, B, and C are incorrect.
Question: Which expression is equivalent to 6x⁸y² + 12x²y²?
Options: A) 12x²y², B) 6x⁶y², C) 6x²y²(x⁶ + 2), D) 6x⁶y² + 12x²y²
Answer: C) 6x²y²(x⁶ + 2)
Explanation: Factoring gives 6x²y²(x⁶ + 2). Choices A, B, and D are incorrect.
Question: In 2x + 35y = 3,934, what does x represent?
Options: A) Trees per hectare in park, B) Incorrect, C) Incorrect, D) Incorrect
Answer: A) Trees per hectare in the park
Explanation: 2x represents park trees, so x is trees per hectare. Choices B, C, and D are incorrect.
Question: Which equation represents the line through (0,40) and (60,0)?
Options: A) Incorrect, B) 8x + 12y = 480, C) Incorrect, D) Incorrect
Answer: B) 8x + 12y = 480
Explanation: The equation satisfies both points. Choices A, C, and D don’t.
Question: If circle A’s radius is 3n and circle B’s is 129n, how many times larger is B’s area?
Options: A) 43, B) Incorrect, C) 129, D) 1849
Answer: D) 1849
Explanation: Area ratio is (129n)²/(3n)² = 1849. Choices A, B, and C are incorrect.
Question: If angle R is 2π/3 radians and angle T is 5π/12 radians greater, what is T in degrees?
Options: A) 75°, B) 120°, C) 195°, D) Incorrect
Answer: C) 195°
Explanation: T = 2π/3 + 5π/12 = 13π/12 radians = 195°. Choices A, B, and D are incorrect.
Question: If a town is 4.36 square miles, how many square yards is it?
Options: A) Incorrect, B) Incorrect, C) Incorrect, D) 13,505,536
Answer: D) 13,505,536
Explanation: 4.36 × (1,760)² = 13,505,536 square yards. Choices A, B, and C are incorrect.
Question: What is the x-intercept of line k, translated down five units from line h through (18,130), (23,160), (26,178)?
Options: A) Incorrect, B) Incorrect, C) Incorrect, D) (-17/6, 0)
Answer: D) (-17/6, 0)
Explanation: Line h’s equation is y = 6x + 22; line k is y = 6x + 17. X-intercept is -17/6. Choices A, B, and C are incorrect.
Question: What is c if y = c intersects y = -x² + 9x – 100 at one point?
Options: A) Incorrect, B) Incorrect, C) -319/4, D) Incorrect
Answer: C) -319/4
Explanation: The parabola’s vertex y-coordinate is -319/4, ensuring one intersection. Choices A, B, and D are incorrect.
Question: Which point lies on both 2x + 3y = 7 and 10x + 15y = 35?
Options: A) Incorrect, B) (-3r/2 + 7/2, r), C) Incorrect, D) Incorrect
Answer: B) (-3r/2 + 7/2, r)
Explanation: The point satisfies the first equation, and the equations are equivalent. Choices A, C, and D are incorrect.
Question: If Tilly earns p dollars for w hours, how much for 39w hours?
Options: A) p/w, B) p + 39, C) p – 39, D) 39p
Answer: D) 39p
Explanation: Proportion p/w = x/(39w) gives x = 39p. Choices A, B, and C are incorrect.
Question: Which function models Juan’s bike ride time at 5.7 minutes per mile?
Options: A) Incorrect, B) Incorrect, C) Incorrect, D) m(x) = 5.7x
Answer: D) m(x) = 5.7x
Explanation: Time is 5.7x minutes for x miles. Choices A, B, and C are incorrect.
Question: What is y in the system 3x + y = 12, -3x + y = -6?
Options: A) Incorrect, B) 6, C) Incorrect, D) Incorrect
Answer: B) 6
Explanation: Adding equations gives y = 6. Choices A, C, and D are incorrect.
Question: If s = 40 + 3t, what is the car’s speed after 5 seconds?
Options: A) Incorrect, B) Incorrect, C) Incorrect, D) 55
Answer: D) 55
Explanation: Substituting t = 5 gives s = 55 mph. Choices A, B, and C are incorrect.
Question: In a right triangle with legs 4 and 5, what is the hypotenuse?
Options: A) Incorrect, B) Incorrect, C) Incorrect, D) √(4² + 5²)
Answer: D) √(4² + 5²)
Explanation: Pythagorean theorem gives c = √(16 + 25). Choices A, B, and C are incorrect.
Question: What is the y-intercept of y = (1/10)x – 2?
Options: A) Incorrect, B) (0, -2), C) Incorrect, D) Incorrect
Answer: B) (0, -2)
Explanation: Substituting x = 0 gives y = -2. Choices A, C, and D are incorrect.
Question: If g(x) = f(x) = 7x³ shifted down two units, what is g(x)?
Options: A) Incorrect, B) Incorrect, C) Incorrect, D) 7x³ – 2
Answer: D) 7x³ – 2
Explanation: Shifting down subtracts two from f(x). Choices A, B, and C are incorrect.
Question: What is the solution to x + 7 = 10, x² = y?
Options: A) (3, 100), B) Incorrect, C) Incorrect, D) Incorrect
Answer: A) (3, 100)
Explanation: Solving gives x = 3, y = 100. Choices B, C, and D are incorrect.
Question: What is 7x³ + 7x – 6x³ + 3x simplified?
Options: A) x³ + 10x, B) Incorrect, C) Incorrect, D) Incorrect
Answer: A) x³ + 10x
Explanation: Combining like terms gives x³ + 10x. Choices B, C, and D are incorrect.
Question: If p(n) = 7n³ = 56, what is n?
Options: A) 2, B) Incorrect, C) Incorrect, D) Incorrect
Answer: A) 2
Explanation: Solving 7n³ = 56 gives n = 2. Choices B, C, and D are incorrect.
Question: In E(t) = 5(1.8)^t, what does 5 represent?
Options: A) Initial employees, B) Incorrect, C) Incorrect, D) Incorrect
Answer: A) Initial employees
Explanation: 5 is the initial value when t = 0. Choices B, C, and D are incorrect.
Question: What is the minimum value of g(x) = (x – 0)² + 55?
Options: A) 0, B) 55, C) Incorrect, D) Incorrect
Answer: B) 55
Explanation: The vertex form gives a minimum of 55. Choices A, C, and D are incorrect.
Question: What type of function models an investment increasing by 0.49% yearly?
Options: A) Incorrect, B) Incorrect, C) Increasing exponentially, D) Incorrect
Answer: C) Increasing exponentially
Explanation: A fixed percentage increase is exponential. Choices A, B, and D are incorrect.
Question: If a population increases by 7% from 2015 to 2016, what is k in kx?
Options: A) 0.07, B) Incorrect, C) Incorrect, D) 1.7
Answer: C) 1.07
Explanation: A 7% increase means k = 1.07. Choices A, B, and D are incorrect.
Question: What is a^(132/144) simplified?
Options: A) Incorrect, B) ¹²√(a¹³²), C) Incorrect, D) Incorrect
Answer: B) ¹²√(a¹³²)
Explanation: a^(132/144) = (a^(1/12))¹³² = ¹²√(a¹³²). Choices A, C, and D are incorrect.
Question: What is the diameter of (x – 5)² + (y – 3)² = 16?
Options: A) 4, B) 8, C) 16, D) Incorrect
Answer: B) 8
Explanation: Radius is √16 = 4, so diameter is 8. Choices A, C, and D are incorrect.
Question: If f(1) = 128 in f(x) = k(1.6)^(x-1), what is k?
Options: A) Incorrect, B) Incorrect, C) 128, D) Incorrect
Answer: C) 128
Explanation: f(1) = k(1.6)⁰ = k = 128. Choices A, B, and D are incorrect.
Question: Which model represents a squirrel population increasing 150% yearly, with 180 squirrels at the end of 2016?
Options: A) Incorrect, B) n = 72(2.5)^t, C) Incorrect, D) Incorrect
Answer: B) n = 72(2.5)^t
Explanation: 150% increase means 2.5x; 180 = a(2.5)¹ gives a = 72. Choices A, C, and D are incorrect.
Question: Which pair of equations represents perpendicular lines?
Options: A) Incorrect, B) 5x + 7y = 1, ax + by = 1 (a/b = -7/5), C) Incorrect, D) Incorrect
Answer: B) 5x + 7y = 1, ax + by = 1 (a/b = -7/5)
Explanation: Slopes -5/7 and 7/5 are negative reciprocals. Choices A, C, and D are incorrect.
The SAT Past Paper MCQs cover critical reading, writing, and math skills, making it an essential Previous Year Exam Paper for preparation. By studying these questions and explanations, students can master key concepts and excel in future SAT exams
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