Explanation Given: The US Navy divers found that if the water is relatively clear and the surface is calm, the ocean filters out 18% of the sunlight for each 4 feet they descend and the divers need to use the underwater spotlights when the amount of sunlight is less than 10%. Formula used: An exponential function can be used to solve compound interest exercises with principle P , rate r and time t is given by the formula, A = P ( 1 + r ) t Calculation: Since, it is provided that ocean clears 18 percent of the sunlight for each 4 feet depth. Now, since an exponential function can be used to solve compound interest exercises with principle P , rate r and time t is given by the formula, A = P ( 1 + r ) t The same equation can be used to calculate the availability of the sunlight at a depth of 20 feet. Since, 18 percent of sunlight is cleared by ocean for each 4 feet into the ocean, thus, rate will be r = − 0.18 and depth will be d 4 and also, sunlight at the surface will be 100 % , so P = 1 . Thus, the equation A = P ( 1 + r ) t becomes, S = ( 1 − 0.18 ) d / 4 Now, to find the available sunlight at depth of 20 feet, put d = 20 in the above equation to get, S = ( 0

Intermediate Algebra plus MyLab Math -- Access Card Package (8th Edition) (Tobey Developmental Math Paperback Series)

8th Edition

ISBN: 9780134266398

Author: John Tobey Jr., Jeffrey Slater, Jamie Blair, Jenny Crawford

Publisher: PEARSON

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Chapter 11.1, Problem 45E

To determine

To calculate: The available sunlight at a depth of 20 feet and the requirement of underwater spotlight when divers work at a dept of 48 feet when and the divers need to use the underwater spotlights when the amount of sunlight is less than 10%.

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Chapter 11.1, Problem 44E

Chapter 11.1, Problem 46E

Chapter 11 Solutions

Intermediate Algebra plus MyLab Math -- Access Card Package (8th Edition) (Tobey Developmental Math Paperback Series)

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The available sunlight at a depth of 20 feet and the requirement of underwater spotlight when divers work at a dept of 48 feet when and the divers need to use the underwater spotlights when the amount of sunlight is less than 10%.

Solution Summary: The author explains how an exponential function can be used to solve compound interest exercises with principle P.

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To calculate: The available sunlight at a depth of 20 feet and the requirement of underwater spotlight when divers work at a dept of 48 feet when and the divers need to use the underwater spotlights when the amount of sunlight is less than 10%.

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Chapter 11 Solutions