Pls anyoneee help mee plss I don have much time anyone plsss

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

Atorch and a battery cost 2.50 altogether. the torch costs 1.50 more than the battery. what fraction of the total price is the torch? give your answer in its simplest form.

Apool measures 100 meters by 100 meters a toddler inside the pool and trows a ball 60 centimeters from one edge of the pool. how far is the ball from the opposite edge of the pool