Suppose you can spend your time doing two things - producing beach balls or going to the beach. (That is, you havetwo mutually-exclusive alternatives.) Suppose you can produce a beach ball at a cost of $1 per ball and you can producetwo balls per hour. If you can sell as many balls as you can make at a price of $1.25 per ball, how much profit can you earn in four hours? (Do not enter a dollar sign. Use two decimal places. For example, if your answer is a dollar-fifty, enter 1.50. If your answer is fifty cents, enter .50.)