Initial population is 1000. Write an equation for the following situation. Let x = number of years passed. y = ending population. Leave no space in your answer, use ^ for exponent Population decreases by 12% per year *

Population triples every 20 years *

Population is halved every 10 years *

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.