the track team at hale high school plans to sell t-shirts to raise money for new equipment. At Ted's Tees, printing costs are $0.80 per shirt and the cost for each T-shirt is $3.75. The shop also charges $125 fee per order for the silk-screen design. In order for the track team to make a profit, the income from selling the T-shirts must be greater than the cost of making the T-shirts. How many shirts must they sell to make a profit?