document.write( "Question 455141: a man shoots a rocket going 48 feet per second from a height 64 feet when will the rocket reach the ground and what is the max height? \n" ); document.write( "
Algebra.Com's Answer #312497 by nerdybill(7384)\"\" \"About 
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a man shoots a rocket going 48 feet per second from a height 64 feet when will the rocket reach the ground and what is the max height?
\n" ); document.write( "h = -32t^2 + 42t + 64
\n" ); document.write( "reaches max at vertex
\n" ); document.write( "t value of vertex found by
\n" ); document.write( "t = -b/(2a)
\n" ); document.write( "t = -42/(2*(-32))
\n" ); document.write( "t = -42/(-64)
\n" ); document.write( "t = 21/32 seconds
\n" ); document.write( "t = .66 seconds
\n" ); document.write( ".
\n" ); document.write( "max height:
\n" ); document.write( "h = -32(.66)^2 + 42(.66) + 64
\n" ); document.write( "h = 77.8 feet\r
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