The boy exits the stairwell at the 4th floor, which is 42 ft above the ground. How many seconds will it take him to get to the 4th floor from a height of 136 ft?

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.