Question

If f(x) = 2x - 4 and g(x)= x², what is f(g(x))?

OA) x²- 4
OB) x² + 2x - 4
OC) 2x³ - 4
OD) 2x² - 4​

Answer 1

D

Explanation:

To evaluate f(g(x)) substitute x = g(x) into f(x)

f(g(x))

= f(x²)

= 2(x²) - 4 = 2x² - 4