As a store owner, you need to do some calculations for a new line of souvenir shirts. Your store rent is $8,000 and the materials used to make each shirt cost $6. It takes one hour to make a shirt. You want to know how many shirts you must sell to breakeven and not lose money, Your insurance premium is $1,500 that is due soon and would like to pay yourself a salary of $2,500. Also, you want to make sure you can pay your employees $9 an hour to make the shirts. Presently, you plan to price your shirts at $20 each. You need to sell shirts to breakeven. (NOTE: The answer is a unit number and not a dollar amount. If a "$" is in the answer, the answer will be counted as incorrect)