SAT Math Question of the Day

Math Category: Functions:

Q: If y(b) = b3 - 2b2 + 3b - 4, then y(-3) =

  1. -55
  2. -37
  3. -19
  4. -1
  5. 1

UNANSWERED.

The correct answer is A.

A: The answer is -55. To solve this function problem, plug in the number -3 wherever the b occurs
y(b) = b3 - 2b2 + 3b - 4
y(-3) = (-3)3 - 2(-3)2 + 3(-3) - 4
      = -27 - 18 - 6 - 4
      = -55