Question

If f(x)=10x+7 and g(x)= x^2-7x, find (f-g)(x).

Answer 1

Choice C.
`(f-g)(x)=-x^2+17x+7`

Explanation:

Recall that
`f-g` is defined by

`(f-g)(x)=f(x)-g(x)`

Therefore we compute

`(f-g)(x)=f(x)-g(x)=10x+7-x^2+7x=-x^2+17x+7`