The Lakewood baseball team is selling T-shirts for fundraiser. The shirt cost $100 for the printing design and set up plus $10 per shirt. The team is going to sell the shirts for $15 each. How many shirts do they need to sell to break even? __shirts

To break even, the total cost must equal the total revenue.

The cost of printing design and set up is $100. The cost of each shirt is $10.

Let's say the number of shirts they need to sell to break even is 'x'.

The total cost would be $100 (printing design and set up) + $10 (cost per shirt) * 'x' (number of shirts).
This can be written as: 100 + 10x.

The total revenue would be the selling price per shirt, which is $15, multiplied by the number of shirts, 'x'.
This can be written as: 15x.

So, to break even, the total cost (100 + 10x) must equal the total revenue (15x).

Setting up the equation:
100 + 10x = 15x

To solve for 'x', we subtract 10x from both sides:
100 = 5x

Dividing both sides by 5:
20 = x

Therefore, they would need to sell 20 shirts to break even.