Question

Perform the requested operation or operations.

f(x) = 4x + 7, g(x) = 3x2

Find (f + g)(x).

Answer 1

By (f + g)(x), do you mean \(f(g(x))\)? Assuming you do, evaluate the expression:

$$4(3x^2) + 7$$

Answer 2

no it says (f+g)(x)

Answer 3

\((f + g)(x) = f(x) + g(x) \therefore \)

\((4x + 7)+(3x^2)\)

Answer 4

right, how do i go about that? where do i even start?

Answer 5

He gave you the answer.

Answer 6

that is the answer?

Answer 7

You need to simplify it.

Answer 8

Which in this case is not much.

Answer 9

3x^2+4x+7 ? thats not one of my answer choices

Answer 10

Yep. This is really that simple in this case.

Answer 11

hm ok thank you for the help!

Answer 12

np. Here is a nice overview of it for you:
http://www.purplemath.com/modules/fcnops.htm