Question

F(x)=5x+4, g(x)= x+7 find f(g(3))

Answer 1

Answer: 54

Explanation:

Start from the middle of the equation and work your way out.

First find g(3) :

g(3) = 3+7 = 10

Then plug g(3) into the f equation:

f(g(3)) = 5(10) + 4 = 54