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Intermediate Algebra – Student Workbook – Second Edition 2013

Intermediate Algebra – Student Workbook – Second Edition 2013

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Lesson 5b - Solving Quadratic Equations<br />

Practice Problems<br />

9. The function h(t) = <strong>–</strong>16t 2 + 96t + 10, where h(t) is height (in feet) of an arrow shot into the<br />

sky as a function of time, in seconds. Round answers to two decimal places as needed.<br />

a) How high above the ground was the arrow when it was shot? Write your answer in a<br />

complete sentence and include all appropriate units. Show your work.<br />

b) After how many seconds does the arrow hit the ground? Write your answer in a<br />

complete sentence and include all appropriate units. Show your work.<br />

c) What is the maximum height of the arrow? Write your answer in a complete sentence and<br />

include all appropriate units. Show your work.<br />

d) Determine h(t) = 100, and interpret your answer in a complete sentence. Show your<br />

work.<br />

Scottsdale Community College Page 236 <strong>Intermediate</strong> <strong>Algebra</strong>

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