20. Refreshments Your school club is making cookies for an upcoming school dance. On the morning of the dance, your group makes 5 batches of dough that yield 7.5 dozen cookies. In the afternoon, your group makes 7 batches of dough that yield 10.5 dozen cookies. a. Write an equation that gives the number of dozen cookies as a function of the number of batches made. b. How many dozen cookies can be made from 12 batches of dough? c. If 12 cookies are in a dozen, how many cookies will 12 batches make?

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