A new concert venue just opened in downtown Houston and they are in the process of deciding how many tickets they can sell for each show. The venue has three levels, two general admission that only have standing room, and one level with 150 seats. The venue thinks each person will occupy 2.25 ft2. The first level of standing room is a square with one side measuring 75ft.
The second level, also standing room, is a rectangle measuring 100’ by 50’ ft.
The third level has 150 seats.
How many tickets can they sell for the first level?