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Answer Explanations for: SAT October 2012

This page contains answer explanations to every question from the October 6, 2012 SAT, Form Codes AEVV, BWVV. Many Mathematics and Writing explanations also link to content pages that explain the relevant grammatical and mathematical concepts in greater detail. Please note that this page will contain the explanations only, and will not provide the test questions themselves; it is a tool intended for use with a copy of your test that you purchased from the College Board via the Question and Answer Service (QAS). The following are sample explanations:

Section 2: Critical Reading
9) C) Passage 1 states that aspiring writers must “[reflect] upon,” and not simply live, their lives (lines 3-4), and Passage 2 makes no mention of this sort of “reflection,” so C is the correct answer. Answer choice A is incorrect because neither passage discusses the ideal age to learn to read. B is incorrect because both passages discuss learning from past works (lines 5-7 and line 20-22). D is incorrect because it is not discussed by either passage. E is incorrect because it is discussed in lines 8-11 of Passage 1 and lines 15-17 of Passage 2.

Section 4: Mathematics
2) C) If x – 2 is a multiple of 3, then 3(x – 2) will be a multiple of 9, since 3 • 3 = 9. Therefore, if x – 2 is a multiple of 3, 3(x – 2) will be divisible by 9. Of the answer choices offered, C is the only one for which x – 2 is a multiple of 3, since 5 – 2 = 3. Therefore, when x = 5, 3(x – 2) = 3(3) = 9, which is divisible by 9, since 9/9 = 1, which is an integer. Another way of doing this problem is simply plugging in the answer choices to get the numeric value of 3(x – 2), then dividing this number by 9. If the result of this division is an integer, you have found your answer. See number properties.

Section 5: Writing
2) E) The original sentence contains a misplaced modifier. All modifying words and phrases must be next to whatever they are modifying, and the phrase at the beginning of the sentence is intended to modify “my sister and I.” As the sentence is written, the modifying phrase is next to “it,” so it is not modifying what it is intended to modify. E fixes the error in the original sentence by placing the modifying phrase next to “my sister and I.” Answer choice B has the same misplaced modifier as answer choice A. C and D are incorrect because the subject pronoun “I” is needed over the object pronoun “me,” since this pronoun (along with “my sister”) is the subject of the verb “agreed.” See pronoun case.

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