Help me out pls I'm kinda confused

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

Aconstruction worker has rope 9 m long he needs to cut it in pieces that are each 3 /5 m long how many such pieces can he cut without having any rope leftover?