Question

Let f(x) = x2 and g(x) = x - 3.

Evaluate (gºf)(-2).
A. -20
B. 20
C. 7
D. 1

Answer 1

D. 1

Explanation:

Step 1: Find g of f(x)

g(f(x)) = (x²) - 3

Step 2: Plug in -2 as x

g(f(x))(-2) = (-2)² - 3

g(f(x))(-2) = 4 - 3

g(f(x))(-2) = 1