Question

If f(x) = 7x- 3 and g(x) = x2 - 4x- 8, find (f+ 9%).

A. (f+9)(x) = x2 – 3x - 5
B. (f+g)(x) = 8x2 - 4x- 11
C. (*+ g)(x) = x2 - 11x-5
D. (f+g)(x) = x2 + 3x-11

Answer 1

option D

Explanation:

f(x) = 7x- 3

g(x) = x2 - 4x- 8

we have

(f+g)(x)= 7x- 3 +x2 - 4x- 8

(f+g)(x)= x2+ 3x- 11