The domain for f(x) and g(x) is the set of all real numbers. let f(x)=3x+5 and g(x)=x^2 find (f+g)(x) a. x^3+5 b. 3x^2+5 c. 3x^3+5x^2 d. x^2+3x+5

Hello from MrBillDoesMath!

Choice C

Discussion:

(f+g)(x) = f(x)        + g(x)

           = (3x + 5) + x^2

          = x^2 + (3x + 5)  by the commutative property

which is choice D

Thank you,

MrB

based on context clues you gave i'm assuming the answer would be c.

where's the diagrams?