A(3, 3) and b(12, 6) c(6, 52) a(-10, 5) and b(12, 16) c(16, -6) a(-8, 3) and b(12, 8) c(18, 4) a(12, -14) and b(-16, 21) c(-11, 25) a(-12, -19) and b(20, 45) a(30, 20) and b(-20, -15) arrowboth arrowboth arrowboth arrowboth

While on a train trip, marsha noticed that there were 35 people in her train car. after the next stop, there were only 21 people in her car. if p represents the percent decrease in the number of people in marsha's train car, what is p?