f(x)=3^x+10x and g(x)=4x-2, find (f+g)(x)

Answer 1

(f+g)(x) = f(x) + g(x) = 3^x + 10x + 4x - 2

Now combine like terms. Note that 3^x is not a like term to 10x or 4x since the x is an exponent.