The city of Amsterdam, in the Netherlands, is 7 feet below sea level. The city of Berlin, in the neighboring country of Germany, is 112 feet above sea level. How much higher is Berlin than Amsterdam?

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)