SAT Math Multiple Choice Question 708: Answer and Explanation

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Question: 708

3. The functions f, g, and h are defined by the equations f(x) = x2, g(x) = x, and Images. Which of the following must be true?

  • A. Images
  • B. Images
  • C. Images
  • D. Images

Correct Answer: D

Explanation:

D

Advanced Mathematics (functions)

MEDIUM-HARD

To answer this question, we must evaluate each of the three functions for an input of ½:

Images

Therefore, Images.

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