(5 points) A charity is planning a dinner to celebrate its 100 th birthday. It needs to cover its costs, but not to make a profit. The event will be held in a catering hall that will charge a rental fee of $2,500 for the evening, and an additional $90 for the coat check service. The caterer will charge $115 a person for food, and another $20 a person for an open bar. There will also be a charge of $1,000 for centerpieces for the tables. The charity has commitments from its board members and vendors for $3,000 in advertisements for the program. The organization expects to charge $150 a ticket. How many people must attend to break even