Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 8 - Personal Finance - 8.1 Percent, Sales Tax and Discounts - Exercise Set 8.1: 48

Answer

(a) $tax = \$6.72$ (b) The calculator's total cost is $\$102.72$

Work Step by Step

(a) To express a percent as a decimal, we can move the decimal point two places to the left. $tax~rate = 7\% = 0.07$ We can calculate the tax. $tax = (0.07)(\$96)$ $tax = \$6.72$ (b) We can calculate the total cost. $cost = \$96 + \$6.72$ $cost = \$102.72$ The calculator's total cost is $\$102.72$
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