The quotient of two integers with same sign is always blank

Negative 5 1/12 + negative 4 1/4 + 6 3/4

Which equation represents the function on the graph?

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?