The graph shows a proportional relationship. a graph with a line running through coordinates (0,0) and coordinates (4,18) what is the unit rate? enter your answer as a decimal in the box.

Aschool allots ? 1500 to spend on a trip to the theatre. theatre tickets have a regular cost of ? 55 each and are on offer for 1 5 off. a train ticket for the day will cost ? 12 each. if 2 teachers and the maximum number of students attend, how much money will the school have left over?