The Butterfly Sanctuary uses the table below to determine the number of cubic yards needed to house a given number of butterflies.
Complete the equation below to show the relationship between the number of butterflies, b, and the cubic yards needed, y. Type your response into the box below.

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.