Arthur earned $136 in three weeks. he goes back to school in one more week. he needs at least $189to buy the new coat that he wants for school. how much must arthur earn in the next week? write an inequality and then solve

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.