In a population of 3 1/4 million people, 2115000 are under the age of 16. calculate the percentage, to two decimal places, of the population who are under the age of 16

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.