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. $15 for every one lap $19.17 for every one lap $7.75 for every one lap $19.50 for every one lap $16.32 for every one lap $23.25 for every one lap Sam had a total donation of $186 after 8 laps. y= 19.5x + 30 Corrine had a total donation of $228.50 after 14 laps. y-228.5 = 7.75(x-14) Javier had a total donation of $230 after 12 laps. y - 230 = 15(x - 12)