Set 3: Polynomial Functions (Intermediate)

[Variation 1] **Choice D is the best answer.** f(4) = 2(4) squared - 1(4) - 1 = 27

Explanation

Answer: D

PROBLEM

Recent studies show that if f(x) = 2x squared - 1x - 1, find f(4).

If f(x) = 2x squared - 1x - 1, find f(4).

✓ Correct

Detailed Explanation

[Variation 1] Choice D is the best answer. f(4) = 2(4) squared - 1(4) - 1 = 27

Why others are wrong:

A: 26 is incorrect because it does not satisfy the equation.

B: 28 is incorrect because it does not satisfy the equation.

C: 29 is incorrect because it does not satisfy the equation.