Question

Which of the following pairs of functions are inverses of eachother?

Answer 1

D.

Explanation:

When you plug g(x) into f(x), your output is x, which is the correct output for when 2 functions are inverses of each other:

(f of g)(x) =
`(4(x+8)-9-8)/(4) +9`

= (x + 8) -9 - 8 + 9

= x + 8 - 8

= x