Question

The question is attached below.

Answer 1

Step-by-step explanation: Replace the function designators with the actual functions in f (x) + g (x).

12x squared + 7x + 2 + 9x + 7

Then simplify

Add 7x and 9x

12 x squared +16x + 2 + 7

Add 2 and 7

12 x squared + 16x + 9

And you get your answer

Answer 2

Choice 3: 12x^2 + 16x + 9

Explanation:

12x^2+7x+2+9x+7

First you must combine like terms

12x^2 can't combine with anything because there are no other squared terms.

7x and 9x combine to make 16x.

2 and 7 combine to make 9.

Therefore you have 12x^2 + 16x + 9