Answer:
f(g(3) = 60
Explanation:
find f(g(3))
The first step is to find g(3)
g(3) means determine the value of the function g(x) when x=3
g(3) = 2x^2 when x=3
g(3) = 2 (3)^2
 = 2(9)
 = 18
Then take 18 as the input to f(x)
f(18) = 3x+6 when x=18
f(18) = 3*18 +6
 54+6
 60
f(g(3) = 60