A store purchased a set of golf clubs for $90.70 and marked it up 150%. During a sale, the store marked it down 80%. What was the discount price of the set of golf clubs?

Three students, javier, sam, and corrine, participated in a fundraiser where people donated a certain amount of money per lap that the student ran. each student also had some initial donations that were collected before the run. the equations that represent each student's total donation, y, based on the number of laps ran, x, is shown below. match each equation with the correct rate of change for that student.