Mrs. White wants to crochet beach hats and baby afghans for a church fund-raising bazaar. She needs 7 hours to make a hat and 3 hours to make an afghan and she has 39 hours available. She wants to make no more than 9 items and no more than 10 afghans. The bazaar will sell the hats for $21 each and the afghans for $5 each. Determine How many of each should she make to maximize the income.