On a graph with y-values ranging from 108,175 to 986,432, what is a reasonable scale to use on a y-axis with 10 tick marks?

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.