Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 2 - Solving Equations - 2-7 Solving Proportions - Lesson Check - Page 127: 5


$x=6.75$ hours

Work Step by Step

Set up a proportion. $\frac{4 songs}{3 hours} = \frac{9songs}{xhours}$ Cross multiply. $3(9)=4x$ Solve. $x=6.75$ hours
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