Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 11 - Additional Topics - 11.6 - Pie, Bar, and Line Graphs - Problem Set 11.6 - Page 503: 28



Work Step by Step

To figure out the average daily amount of tips, we must divide the total amount of tips by $7$, the number of days that the waiter worked. To figure out how much money the waiter earned in tips for the week, we add up the amount of tips he earned on each individual day: $\$90+\$40+\$50+\$40+\$60+\$120+\$180=\$580$. Next, we divide by $7$: $\$580\div7\approx\$82.86$
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