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Answer Explanations for: ACT June 2011 ACT, Form 69F

This document contains detailed answer explanations to every question from the June 11, 2011 ACT, Form 69F. Many Mathematics and English explanations also link to content pages that explain the relevant grammatical and mathematical concepts in greater detail. Please note that this document contains the explanations only, and does not provide the test questions themselves; it is a tool intended for use with a copy of your test that you purchased from the ACT via the Test Information Release (TIR). The following are sample explanations:

English
1) A) “Who” is correct because “who” is the subject form of the pronoun, and it is the subject of the verb “have.” “Whom” is only used for objects. A foolproof test is that you use who if it is not preceded by a preposition and is followed by a verb, while you use whom if it is either preceded by a preposition or followed by a noun or pronoun. Here you must also decide whether to use the singular “has” or the plural “have.” Because the sentence is about the plural “patients,” you must use the plural “have.” See pronoun case and verb agreement.

Mathematics
1) C) The perimeter of a rectangle is equal to two times the length plus two times the width. Therefore, P = (2 • 14) + (2 • 9) = C. If you answered A, you forgot to double both the length and width. If you answered D, you solved for the area instead of the perimeter. See coordinate geometry.

Reading
1) B) Watch out for the “EXCEPT.” B is correct because it is never discussed in the passage. A is incorrect because such description is present in lines 42-43. C is incorrect because much of the passage has to do with others’ responses to Brand. One example of the responses to him can be found in lines 88-92. D is incorrect because most of the passage consists of Brand conversing with the other men at the train station.

Science
1) B) Figure 2 clearly indicates that as the incubation temperature (found on the x-axis) increases, the average CH4 emission rate (found on the y-axis) increases for both beach and ash leaves. Continue reading

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