(f o g)(x)=10x+20 f(x)= x+2 g(x)=??

(f(g(x)))= (g(x)) + 2
10x+20= (g(x)) + 2
10x +18= g(x)

(fog)(x) = f(g(x)) = g(x) + 2 = 10x + 20

g(x) = 10x +20 – 2

g(x) = 10x + 18