Could someone with proportions?

Which system of linear inequalites is represented by 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?

Which is an x-intercept of the graphed function? (0, 4) (–1, 0) (4, 0) (0, –1)