Answer
(d) x^2 + 3x + 5
Explanation
This problem is telling us to add f(x) and g(x).
f(x) = 3x + 5
g(x) = x^2
f(x) + g(x) = (3x + 5) + (x^2)
There are no like terms for us to combine, so all we need to do is put the terms in the correct order.
3x + 5 + x^2
x^2 + 3x + 5
