Question

Jimmy is selling used books at a yard sale. A customer buys 9 books at a cost of $0.75 each and pays with a $20.00 bill. Jimmy must determine c, the amount of change in dollars he should give the customer. Which equation represents c?

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Answer 1

c = $20.00 - $0.75(9)

Explanation:

Multiply the cost of each book by the total number of books. Then, subject that from 20.