Volunteer drivers are needed to bring 80 students to the championship soccer game. Drivers either have cars, which can seat 4 students, or vans, which can seat 6 students. The equation 4c + 6v = 80 describes the relationship between the number of cars, c, and number of vans, v, that can transport exactly 80 students. Select ALL statements that are true about the situation (I. E. There is more than one true statement!)