SAT Math Question of the Day

Math Category: Functions:

Q: If g(x) = 2x2 - 3x + 5, then g(-1) =

  1. 0
  2. 4
  3. 6
  4. 8
  5. 10

UNANSWERED.

The correct answer is E.

A: The answer is 10. In a function problem like this plug in the -1 wherever the x occurs.
g(x) = 2x2 - 3x + 5
g(-1) = 2(-1)2 - 3(-1) + 5
      = 2 + 3 + 5
      = 10