College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter P, Prerequisites - Section P.1 - Modeling the Real World with Algebra - P.1 Exercises: 11

Answer

Answer: A). Please see the image. B.) depth d = 34 ft.
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Work Step by Step

Here P = 14.7 + 0.45d P is presuure in $\frac{lb}{in^{2}}$, d is depth in feet. A). we get answer by using values of depth d as 0, 10, 20, 30, 40, 50, 60. B.) Here P = 30 $\frac{lb}{in^{2}}$ d = $\frac{P - 14.7}{0.45}$ = $\frac{30 - 14.7}{0.45}$ = $\frac{15.3}{0.45}$ = 34 ft
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