Select all relations that represent function

What is the inverse of the function f(x)=4x+8

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out