Question

find the inverse function f^-1(x) if f(x)= 4(x-2)

Answer 1

to make it simpler, call f(x) something like y or z or Bob, so that it just becomes another variable/ placeholder

you get y = 4(x-2)

then you need to end up with a statement that expresses x as some function of y

so divide each side by 4
y/4 = x-2

then add 2 to each side

and so on...