The areas of two similar triangles are 144 unit2 and 81 unit2. A. What is the ratio of their perimeters? B. If a side of the first is 6 units long, what is the length of the corresponding side of the second?

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.