Question

For the given functions f and g , find the indicated composition.

f(x) = 3x + 9, g(x) = 5x - 1
(fg)(x)
A) 15x + 12
B) 15x + 8
C) 15x + 6
D) 15x + 44

Answer 1

ok so another way to look at this is f(g(x))
Our x variables get replaced with g(x)
f(5x-1)
So you replace your x variables in f(x) with 5x-1

Answer 2

f(5x-1)=3(5x-1)+9

Answer 3

OH thats right I was trying to disturbte them

Answer 4

thank you!