document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=305740>Question 305740</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello, once again I'm not understanding this question.  Please help\r<BR>\n" );
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document.write( "A professional stunt performer at a theme park dives off a tower, which is 21m high, into water below.  The performer's height, \"h\", in meters, above the water at \"t\" seconds after starting the jump is given by h=-4.9t^2+21.<BR>\n" );
document.write( "a)How long does the performer take to reach the halfway point?<BR>\n" );
document.write( "b)How long does the performer take to reach the water?<BR>\n" );
document.write( "Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #218874 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=218874\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a) what is the halfway point? plug that in for h solve for t.<BR>\n" );
document.write( "b) what height is the water? plug that in for h and solve for t<BR>\n" );
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