jika f(x)= 3x+1 dan (f o g) (x)=7x+2 maka g(4)....

langsung aja y

(fog)(x) = f{g(x)}

7x + 2 = 3g(x) + 1

7x + 2 - 1 = 3g(x)

7x+1 / 3 = g(x)

g(4) = 7(4) + 1 / 3
g(4) = 28+1 / 3
g(4) = 29/3