What is the inverse function of f(x) = x/x-2

Liz is shipping a package to her friend.the maximum weight of a medium flat-rate box is 20 pounds,including the box which weighs 6 ounces.write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.

How do i solve uniform motion problems?

Here is another math questions. i will keep asking different questions. 4^2x=6