document.write( "Question 1104583: The height of a rock dropped off the top of a 72-foot cliff over the ocean is given in feet by h(t) = 72 - 16t^2, where t is the number of seconds since it is released. How long does it take the rock to hit the water? \n" ); document.write( "
Algebra.Com's Answer #719282 by Alan3354(69443)\"\" \"About 
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\n" ); document.write( "h(t) = 72 - 16t^2
\n" ); document.write( "At impact, h(t) = 0
\n" ); document.write( "72 - 16t^2 = 0
\n" ); document.write( "Solve for t.
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