The cost of a bus for a field trip was split evenly between the 120 students going. But the day before the trip, 30 more students decided to go. Dividing the cost evenly among all 150 students brought the average cost down $1.20 per person. What is the total cost of the bus? NEED ANSWER ASAP! WILL PICK BRAINLIEST ANSWER AND REWARD 80 POINTS!