Question

Given f(x) = 4x + 13 and g(x) = 10x − 2, solve for (f + g)(x) and select the correct answer below. (f + g)(x) = 14x + 15 (f + g)(x) = 14x + 11 (f + g)(x) = 6x + 11 (f + g)(x) = 6x + 15

Answer 1

Actually, we're combining two separate functions into one, not solving anything.

f(x) = 4x + 13 and g(x) = 10x − 2  should be written one above the other:

f(x)  = 4x + 13 and
g(x) = 10x − 2

Now add like terms together:

(f+g)(x) = 14x + 11 (answer)