Eliana takes photos and videos on her phone. let p represent the number of photos and v represent the number of videos that eliana can take using her storage space. 15p + 70v < 400 eliana wants to take 12 photos. how many videos at most can she take with the remaining storage space?

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.