The amount of sales tax paid on a product is directly proportional to its purchase price. In

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The amount of sales tax paid on a product is directly proportional to its purchase price. In Indiana, the sales tax on a Sony Reader that sells for $260 is $17.50. What is the sales tax on an e-book that sells for $21?
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College Algebra Graphs and Models

ISBN: 978-0321845405

5th edition

Authors: Marvin L. Bittinger, Judith A. Beecher, David J. Ellenbogen, Judith A. Penna

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