An investor is franchising a new type of fitness studio that will be the first in the city and must determine how many locations to open. Each location will have a manager with a salary of $4,000 per month and two part-time employees with salaries of $2,000 each per month. Additional operating costs, including rent and utilities, will be $6,000 per month at each location. The investor projects that after the business gains traction, the first location will have 1,100 members. The second location will bring in 950 members. The third and fourth locations will bring in 350 and 200 members, respectively. The monthly membership fee will be $45 per member. How many locations should the investor franchise?