What would the answers be for these questions. and can you tell me what i am doing wrong?

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

For the equations below which statement is true ?

During your cycling trip, you and your friends often stayed in hostels. the prices of these are listed below. hostel standard room (price per night) with breakfast (price per night) super sleep hostels £22.45 £28.65 normandy nights £18.55 £25 zzzola hostels £24.50 £30.99 belgian beds £11.20 £18.55 night-time rest days ? £33 what is the range in cost for a single night, including both standard room prices and with breakfast prices?