Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 1 - Section 1.11 - Solving Equations and Inequalities Graphically - 1.11 Exercises - Page 122: 48

Answer

$(a)$ See the image below. $(b)$ Approximately $66.67 ft.$

Work Step by Step

$(a)$ See the image above. $(b)$ To calculate the height, we have to write and calculate: $\sqrt{1.5x+(\frac{x}{5280})^2}=10$ For easier way, we can use the graph. We need to find intersection of the graph at $y=10$. That is point $A(66.67, 10)$ Height has to be approximately $66.67 ft.$
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