Question

If f(x)=-2x-3 what is f(r+2) ?

Answer 1

`f(x) = - 2x - 3`

when x is r + 2 :

`f(r + 2) = - 2(r + 2) - 3 \\ = - 2r - 4 - 3 \\ = - 2r - 7 \\ \\ { \boxed{ \boxed{f(r + 2) = - 2r - 7}}}`