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OpenStudy (anonymous):
You drop a rock off a bridge. The rock’s height, h (in feet above the water), after t seconds is modeled by h=16r^2+541 . What is the height of the rock after 2 seconds? A. –64 feet B. 605 feet C. 509 feet D. 477 feet
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OpenStudy (anonymous):
this should be \[h=-16t^2+541\]
OpenStudy (anonymous):
replace t by 2 and see what you get
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