Question

If(x)=4x+2 and g(x)=2x-4 what is f(g(x))

Answer 1

f(g(x)) = 8x-14

Explanation:

You need to bring one inside the other so:

f(g(x)) = 4(2x-4) +2

f(g(x)) = 8x - 16 + 2 = 8x -14

instead of x in the f(x) function, you replace it with the function g(x)