diketahui f(x) = 3x - 15 , g(x) = 2x + 6 , dan h(x) = x + 6. tentukan : a. rumus fungsi ( g bundaran f bundaran h ) (x) b. nilai p jika (h bundaran f bundaran g

g o f o h(x)
g o f (x + 6)
g (3 (x + 6)-15)
g (3x + 18 - 15)
g (3x + 3)
2 (3x + 3) + 6
6x + 6 + 6
6x +12

h o f o g(p) = -3
h o f (2p + 6) = -3
h (3 (2p + 6) - 15) = -3
h (6p + 18 - 15) = -3
h (6p + 3) = -3
6p + 3 + 6 = -3
6p + 9 = -3
6p = -3 - 9
6p = -12
p = -2