Question

Given f(x) = 10x + 4 and g(x) = 3x - 8, what is f(x) + g(x) ?

- 7x - 4
- 13x + 4
- 7x + 4
- 13x - 4

Answer 1

The answer has to be 13x-4

Explanation:

10x+4 + 3x-8

13x+4-8 (Combine like terms)

13x-4

Answer 2

13x - 4

Explanation:

f(x) + g(x) = 10x + 4 + 3x - 8.

First, we must rearrange it so we can add like terms.

10x + 3x + 4 - 8.

Add together 10x and 3x.

13x + 4 - 8.

Subtract 4 - 8.

13x - 4.

Therefore, the answer is 13x - 4.