SAT Math Question of the Day

Math Category: Functions:

Q: If f(b) = -2b2 - 7b - 4, then f(-4) =

  1. -12
  2. -8
  3. -4
  4. 0
  5. 4

UNANSWERED.

The correct answer is B.

A: The answer is -8. To solve this function problem, plug in the number -4 wherever the b occurs
f(b) = -2b2 - 7b - 4
f(-4) = -2(-4)2 -7(-4) - 4
      = -32 + 28 - 4
      = -8