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OpenStudy (anonymous):
The height h of an arrow in feet is modeled by h(t)=-16t^2+63t+4, where t is the time in seconds since the arrow was shot. How long is the arrow in the air?
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OpenStudy (anonymous):
How long is the arrow in the air? is a matter of understanding that h(t) = 0, because the arrow will be 0 feet high when it is first shot and when it lands, sooo set the equation equal to 0, and solve for t ^_^
OpenStudy (anonymous):
thank you
OpenStudy (anonymous):
you bet! ^_^
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