Final answer:
To find (f + g)(x), add the functions f(x) and g(x) together.
Step-by-step explanation:
To find (f + g)(x), we need to add the functions f(x) and g(x) together.
f(x) = 4x + 4
g(x) = 4x^2 + 4x
Adding the functions, (f + g)(x) = 4x + 4 + 4x^2 + 4x
Combining like terms, (f + g)(x) = 4x^2 + 8x + 4