SAT Math Multiple Choice Question 3: Answer and Explanation

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Test Information

Question: 3

3. If 9−2 = x, what is the value of x ?

  • A. 1
  • B. 2
  • C. 4
  • D. 6

Correct Answer: C

Explanation:

C Negative exponents mean to take the reciprocal and apply the positive exponent. So 9−2 = . Now find what power of equals . Because 34 = 81, , and x must be 4. The correct answer is (C).

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