"the number of buses needed for a school field trip depends on the total number of people going. one field trip required seven buses for a total of 217 students and 35 adults. what is the rate of people per bus? "

Carmen and matt are conducting different chemistry experiments in school. in both experiments, each student starts with an initial amount of water in a flask. they combine two chemicals which react to produce more water. carmen's experiment starts with 30 milliliters of water in a flask, and the water increases in volume by 8.5 milliliters per second. matt's experiment starts with 10 milliliters of water and increases in volume by 28% each second.