Question

If f(x)=5x-2and g(x)=2×+1,find (f+g)(x) a. 7x-1 B. 7x-3 C. 3x-1 D. 4x-3

Answer 1

a. 7x-1

Explanation:

The given functions are;

`f(x)=5x-2` and
`g(x)=2x+1`.

We want to find;

`(f+g)(x)=f(x)+g(x)`

This implies that:

`(f+g)(x)=(5x-2)+(2x+1)`

Regroup similar terms;

`(f+g)(x)=5x+2x+1-2`

Combine similar terms;

`(f+g)(x)=7x-1`

The correct choice is

a. 7x-1