Question

Which expression represents the composition [fo g](x) for the functions below?

f(x) = 2x + 3
g(x) = x-6

Answer 1

2x - 9

Explanation:

f o g(x) is f(g(x))

Replace x in 2x + 3 with x - 6 giving you 2(x-6) + 3

Simplified: 2x - 12 + 3 then 2x - 9