Question

I need help really bad

Answer 1

Answer:

see explanation

Step-by-step explanation:

If f(x) and $f^{-1}$ are inverse functions, then

f($f^{-1}$)(x) = x

Thus substitute x = $f^{-1}$ (x) into f(x)

f($\frac{x+6}{5}$ )

= 5 ($\frac{x+6}{5}$ ) - 6

= x + 6 - 6

= x

Thus f(x) and $f^{-1}$ (x) are inverse functions