Required: Benny and Frieda are art students who often received compliments on the t-shirts they have designed. In need of funds for fall semester, they decide to sell these t-shirts at a small stand at the South Haven Beach during the summer. Key Information: Rent on the stand is $800. Variable costs per t-shirt are $5.25. Selling price $18 each. Benny and Frieda estimate they each need to earn $1,000 (total $2,000) to meet their needs for the fall term. a. How many shirts (units) do they need to sell monthly to make their target profit of $2,000? b. Calculate this amount in sales dollars.