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OpenStudy (anonymous):
The height h of an arrow in feet is modeled by h(t) = -16t2 + 63t + 4, where t is the time in seconds since the arrow was shot. How long is the arrow in the air? _____ s. Enter a number only.
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OpenStudy (anonymous):
t = 4 seconds (or -1/16... ha)
OpenStudy (anonymous):
2 sec
OpenStudy (anonymous):
4 was correct
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