• 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! =)
