document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=544765>Question 544765</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a ball is thrown straight up from a rooftop 240ft high. The ball misses the rooftop on the way down.When will the ball be at 120 ft. identify solution on a graph   h=-16t^2+56t+240 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #355245 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=355245\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> h=-16t^2+56t+240<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Solve: -16t^2+56t+240 = 0<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "-8(2t^2 - 7t + 30) = 0<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "Quadratic Formula:<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "t = [7 +- sqrt(49 - 4*2*30)]/4<BR>\n" );
document.write( "----<BR>\n" );
document.write( "t = [7 +- sqrt(-191)]/4<BR>\n" );
document.write( "---<BR>\n" );
document.write( "t = [7 + isqrt(191)]/4 or t = [7 - isqrt(191)]/4<BR>\n" );
document.write( "=============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "=============<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );