A cell phone company charges a fixed texting rate of $25 per month, plus $0.05 for every text sent over the plan. If your text charges came to $30, how many texts did you send past your plan?

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.