You are in charge of determining admission prices for an upcoming charity event. The auditorium where the event will be held can seat no more than 1200 people. You want to sell at least 400 seats in the balcony that will cost $15 per seat. You can sell no more than 700 orchestra level seats that will cost $25 per seat. You want to maximize your income from the ticket sales. Which of the following is not a constraint in this situation?
O x + y ≤ 1200
O y ≥ 0
O x ≥ 400
O y ≤ 700
