Question

Find (fog)(x).

Answer 1

Answer:

$(fog)(x)=6x+18$

Step-by-step explanation:

We are given:

f(x)=6x

and g(x)=x+3

We need to find (fog)(x)

(fog)(x) =f(g(x)) i.e we will put value of g(x) into f(x) i.e

$(fog)(x)=f(g(x))\\f(g(x))=6(x+3)\\f(g(x))=6x+18$

So, $(fog)(x)=6x+18$