Question

If f(x) = -3x - 5 and g(x) = 4x - 2, find (f+ g)(x).

Answer 1

(f+g)(x) = x - 7

Explanation:

(f+g)(x) tells you to add the functions together. It means

f(x) + g(x)

= -3x - 5 + 4x - 2

combine like terms.

= 4x-3x - 5 - 2

= x - 5 - 2

simplify.

= x - 7

(f+g)(x) means

f(x) + g(x)

= x - 7