Question

Given the following functions f(x) and g(x), solve (f + g)(3) and select the correct answer below:

f(x) = 2x + 21

g(x) = x − 24

Answer 1

(f+g)(x) = 2x + 21 + x − 24 = 3x - 3
so
(f+g)(3) = 3(3) - 3 = 9 - 3 = 6

answer
(f + g)(3) = 6