tolong jawabin no 7 yang C sama no 8 yang a

7.c misalkan : (f o g)(x) = h(x), maka
f(x) = h(g^-1(x))
g(x) = 5x - 2
y = 5x - 2
5x = y + 2
x = 1/5(y + 2)
g-1(x) = 1/5(x + 2)
f(x) = 4 - 3(1/5(x + 2)) = 4 - 3/5(x+2) = (20-3(x+2))/5 = 1/5(14-3x)
Semoga membantu.