Mandy wants to save $40 to buy a gift for her dad. Her neighbor pays her weekly to help his daughter with homework. Mandy always gives $3 to the food bank in weeks when she earns money. Mandy calculates that it will take her 5 weeks to earn the money for her dad’s gift. How much does Mandy’s neighbor pay her each week to tutor?

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.