What is the domain and range

Can someone me i’m confused. will give brainliest and a whole bunch of points

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section