I need help with this problem please I don’t understand

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)

Kelly walks 0.7 mile to school. mary walks 0.49 mile to school. write an inequality using < ,> , or = to compare the distances they walk to school.

Acircle is centered at the point (5, -4) and passes through the point (-3, 2). the equation of this circle is