Marcus is observing bacteria multiply. every 15 seconds, there are 10 times more bacteria than before. if there are 10 bacteria now, marcus predicts there are will be 3,000,000 bacteria in 2 minutes. is marcus correct? explain

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.