The County Historical Society and Museum is considering holding a picnic as a fundraiser. They plan to charge $15 per ticket. They can rent a facility at a state park for $300. The food would be catered by a local caterer at a cost of $4 per meal, plus $100 for setting up their equipment. A band would be hired to play for $200 plus 5% of the “gate” (gross ticket sales). The Society would like to net at least $3,000 from the event. How many tickets must be sold for them to achieve their goal?