Question

Help please !!!
If f(x)=3x-1 and g(x) = x + 2 , find ( f +g ) (x)

Answer 1

For this case we have the following functions:

`f (x) = 3x-1\\g (x) = x + 2`

We must find
`(f + g) (x)`. By definition we have to:

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

So:

`(f + g) (x) = 3x-1 + (x + 2)\\(f + g) (x) = 3x-1 + x + 2`

We add similar terms:

`(f + g) (x) = 4x + 1`

Answer:

`(f + g) (x) = 4x + 1`

Option D