SAT Math Question of the Day

Math Category: Exponents Level 1:

Q: What is 3-2?

  1. -6
  2. -3/2
  3. -2/3
  4. 1/9
  5. 2/3

UNANSWERED.

The correct answer is D.

A: The answer is 1/9. When you see a negative exponent like x-a, this is the same as 1/xa.
So 3-2 = 1/32 = 1/9.