Question

given that f(x) = x^2 - 4x - 3 and g(x) = x+3 / 4 solve for f(g(x)) when x = 9

-6

3

6

9

Answer 1

so you need to solve for f(g(9))

Answer 2

determine g(9) and use that to determine f(g)

Answer 3

Do i put 9 wherever there is x?

Answer 4

since x=9, then yes, that would be a good idea

Answer 5

the confusing part for most is that they see f is composed of x, but the instructions say to compose f out of g

Answer 6

f(g(x)) = [g(x)]^2 - 4[g(x)] - 3

f(g(9)) = [g(9)]^2 - 4[g(9)] - 3