document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=571884>Question 571884</A>: <I><SPAN STYLE=\"word-break: break-all;\"> At 9:45 am Sue threw a ball upwards while standing on a platform 35 feet above the ground.The height after x seconds follows the equation H(x)=-0.6X^2+72x+35. What will be the maximum height of the ball? And how long will it take to reach its maximum height? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #368211 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=368211\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> At 9:45 am Sue threw a ball upwards while standing on a platform 35 feet above the ground.The height after x seconds follows the equation H(x)=-0.6X^2+72x+35. What will be the maximum height of the ball? And how long will it take to reach its maximum height?<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "The vertex occurs where x = -b/(2a) = -72/(-1.2) = 6 seconds<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "Maximum height = H(6) = 445.4 ft<BR>\n" );
document.write( "=====================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "============ </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );