SSAT Math Question 371: Answer and Explanation

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Question: 371

15. =

  • A.
  • B.
  • C.
  • D.

Correct Answer: C

Explanation:

C

Deal with one term at a time, starting with the coefficients. A negative exponent is the reciprocal of a positive exponent. Thus, 3–2 is the same as . As the denominator already contains 9, the simplified denominator must contain 81. As a appears only in the numerator and has a positive exponent, nothing needs to be changed. As b has a negative exponent, the term becomes . As c appears only in the denominator and has a positive exponent, nothing needs to be changed. As d has a negative exponent, the term becomes = d6.

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