Answer:
4
Step-by-step explanation:
10 (/5) 2
15 (/5) 3
20 (/5) 4
I think the answer is B.
(f + g)(x) = f(x) + g(x)
(f + g)(x) = 3x + 5 + x^2 = x^2 + 3x + 5
Answer: Choice D