Answer:
3^x+12x-4
Step-by-step explanation:
(f+g)(x) = f(x) + g(x) = 3^x + 10x + 2x - 4 = 3^x + 12x - 4
3 1/2x + 215=495
495-215=280
3 1/2 ÷280
x=80
if this helps
There's no question. This is just a statement.
