SAT Math Multiple Choice Question 881: Answer and Explanation

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Test Information

Question: 881

11. Which sequence of steps correctly gives the value ofand algebraically justifies the value?

  • A.
  • B.
  • C.
  • D.

Correct Answer: D

Explanation:

D

Difficulty: Medium

Category: Passport to Advanced Math / Exponents

Strategic Advice: Use rules of exponents to rewrite the expression. The saying power over root may help as well.

Getting to the Answer: Use the exponent rule amn = (am)n and the fact that to rewrite the expression. Then simplify using the property:

This means (D) is correct.

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