Question

Let f(x) = 4x + 3 and g(x) = -2x + 5. Find fog 5

Answer 1

4(5)+3= 23
-2(5)+5= -5

Answer 2

-17

Explanation:

first find g(5) = -2(5)+5 = -5

then f(-5) = 4(-5)+3 = -17