loop is a rectangle whose perimeter is 30. Lm=12cm mono is a right angled triangle whose area is 12 cm cubed. Calculate the length of mn

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.