Can somebody me on question five i’m kinda confused. ( make sure you show the work in the comments)

Askate shop rents roller skates as shown on the table below. which graph and function models this situation?

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?

The graph of f(x) = |x| is transformed to g(x) = |x + 11| - 7. on which interval is the function decreasing?