document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=993688>Question 993688</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If an object is projected vertically upward from ground level with an initial velocity of 240 ft/sec, then its distance s above the ground after t seconds is given by   s = &#8722;12t^2 + 240t.For what values of t will the object be more than 1188 feet above the ground? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #612900 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=612900\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1188>-12t^2+240t<BR>\n" );
document.write( "-12t^2+240t-1188<0<BR>\n" );
document.write( "-t^2+20t-99<0<BR>\n" );
document.write( "t^2-20t+99>0<BR>\n" );
document.write( "(t-11)(t-9).0<BR>\n" );
document.write( "at t>9 and <11 seconds.<BR>\n" );
document.write( "at 9 seconds, -972+2160=1188<BR>\n" );
document.write( "at 11 seconds, -1452+2640=1188\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28300%2C200%2C-10%2C15%2C-50%2C1500%2C-12x%5E2%2B240x%29 ALIGN=MIDDLE  ALT=\"graph%28300%2C200%2C-10%2C15%2C-50%2C1500%2C-12x%5E2%2B240x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );