At Halloween a child brings home a big bag of candy. The bag contains 10 kinds of candy, with at least 20 candies of each kind. Among them there are Kit Kat and Mars bars. In how many ways can she pick 20 candies from the bag if

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)