bantu jawab no 14,15,16 pakai caranya

14. f(x) = 2x-18
y = 2x-18
-2x = -y-18
x = -y-18/-2
f^-1(x) = -x-18/-2 atau x+18/2

15. f(x) = 4x-5
y = 4x-5
-4x = -y-5
x = -y-5/-4
f^-1(x) = -x-5/4 atau x+5/4
16. (f•g)(x) = f(g(x))
= f(x-2)
= (x-2)^2+8
= x^2-4x+4+8
= x^2-4x+12
Jawabannya
14. E
15. D
16. A dan C