SSAT Math Question 575: Answer and Explanation

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Question: 575

4. For what integer value of m does 2m + 4 = m³ ?

A. 1
B. 2
C. 3
D. 4

Correct Answer: B

Explanation:

Use PITA to Plug In the choices for m, starting with (C). Plug 3 in for m: 2(3) + 4 = 10 and 3³ = 27, which are not equal. Since 3 is too large, eliminate (C), (D), and (E). Next try (B): 2(2) + 4 = 8 and 2³ = 8. Since this works, stop here. The correct answer is (B).

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