SAT Math Question of the Day

Math Category: Exponents Level 1:

Q: What is 9-1?

  1. -1/8
  2. -1/9
  3. 1
  4. 1/9
  5. 1/8

UNANSWERED.

The correct answer is D.

A: The answer is 1/9. A number to the -1 power is 1 divided by the number.