Question

Given f(x) = 5x + 5 and g(x) = 6x + 1

then what is ( f + g )(-8)) ?

*******PLEASE HELP**********

Answer 1

• f(x) = 5x + 5

• g(x) = 6x + 1


Now, you just sum those functions:

(f + g)(x) = f(x) + g(x)

(f + g)(x) = (5x + 5) + (6x + 1)

(f + g)(x) = 5x + 6x + 5 + 1

(f + g)(x) = 11x + 6


Therefore,

(f + g)(– 8) = 11 · (– 8) + 6

(f + g)(– 8) = – 88 + 6

(f + g)(– 8) = – 82 <——— this is the answer.


I hope this helps! =)