Explanation Given: s ( t ) = − 16 t 2 + 8 t + 87 Calculation: Consider the following function, which represents the height of the ball, s ( t ) = − 16 t 2 + 8 t + 87 Where s ( t ) , in feet, t seconds after the ball was thrown. To find the value of t when s ( t ) > 87 . So, we get − 16 t 2 + 8 t + 87 > 87 Subtract 87 from both sides − 16 t 2 + 8 t > 0 − 8t ( 2 t − 1 ) > 0 − 8t ( 2 t − 1 ) − 8

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ISBN: 8220101539229

Author: Blitzer

Publisher: Pearson Education (US)

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Chapter 8.5, Problem 72E

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To calculate: During which time period will the diver’s height exceed that of the cliff for the function s(t)=−16t2+8t+87 when s(t)>87

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Chapter 8.5, Problem 71E

Chapter 8.5, Problem 73E

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During which time period will the diver’s height exceed that of the cliff for the function s ( t ) = − 16 t 2 + 8 t + 87 when s ( t ) > 87

Solution Summary: The author calculates the diver's height exceeds that of the cliff between 0 and 0.5 sec.

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To calculate: During which time period will the diver’s height exceed that of the cliff for the function s(t)=−16t2+8t+87 when s(t)>87

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Chapter 8 Solutions

During which time period will the diver’s height exceed that of the cliff for the function s ( t ) = − 16 t 2 + 8 t + 87 when s ( t ) &gt; 87

Solution Summary: The author calculates the diver's height exceeds that of the cliff between 0 and 0.5 sec.

Concept explainers

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To calculate: During which time period will the diver’s height exceed that of the cliff for the function s(t)=−16t2+8t+87 when s(t)>87

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Chapter 8 Solutions

During which time period will the diver’s height exceed that of the cliff for the function s ( t ) = − 16 t 2 + 8 t + 87 when s ( t ) > 87