C charter a bus which holds at most 45 people to go to an educational tour in a museum. The bus company requires at least 30 people to go. It charges R.O. 211 per person if up to 40 people go. If more...

C charter a bus which holds at most 45 people to go to an educational tour in a museum. The

bus company requires at least 30 people to go. It charges R.O. 211 per person if up to 40 people

go. If more than 40 people go, it charges each person 211OR less 0.2 times the number more than

40 who go. Find the total cost as a function of the number of students who go.