Answer:
The answer to your question is 6x
Step-by-step explanation:
Data
f(x) = 3x
g(x) = 2x
(g°f)(x) = ?
Process
1.- To find (g°f)(x) substitute the value of f(x) in g(x) and simplify
-Substitution
(g°f)(x) = 2(3x)
-Simplification
(g°f)(x) = 6x
The third choice is correct
