Question

(01.02) Given the function f(x) = 5(x+4) ? 6, solve for the inverse function when x = 19.

Answer 1

Hope you can see my workout in the picture I attached below.

f⁻¹(x) =
`(x - 20)/(5)`

AND

f⁻¹(19) =
`- (1)/(5)`