Question

For (x) = 4x+1 and g(x) = x^2 -5, find (f•g)(x).

O A. 4x^3 + x^2 - 5x-5
O B. 4x² + x^2 - 4x - 6
O C. 4x^3 + x^2 - 20x-5
O D. 4x^2 -19

Answer 1

D = 4x^2 - 19

Explanation:

We have:

(f•g)(x) = f(g(x))

= f(x^2 - 5)

= 4(x^2 - 5) + 1

= 4x^2 - 19