Question

F(x) = x+4g(x)=2x+ 2Find (f+g) - 8

Answer 1

`\begin{gathered} f(x)=x+4 \\ g(x)=2x+2 \\ (f+g)-8=f(-8)+g(-8) \\ (f+g)-8=-8+4+2(-8)+2 \\ (f+g)-8=-4-16+2 \\ (f+g)-8=-20+2 \\ (f+g)-8=-18 \end{gathered}`