Dik:(fog)(x)=8x+15 dan g(x)=x+3 Maka f(x-2)=

(fog)(x) =  8x + 15
f(g(x)) = 8x + 15
f(x+3) = 8x + 15 = 8(x+3) - 9
maka,
f(x) = 8x - 9,
sehingga,
f(x-2) = 8(x-2) - 9 = 8x - 16 - 9 = 8x - 25