A fish tank has a height of 30 inches, length of 20 inches, and a width of 25 inches. How many cubic inches will the tank hold when half full?
A 7,500 in^3
B 3,700 in^3
C 15,000 in^3
D 1,850 in^3

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.