document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=136113>Question 136113</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please i need urgent help here. pleaseeeeeeeeeeee<BR>\n" );
document.write( "The height of an object propelled upward from a height of 128 feet at an initial velocity of 112 feet per second is given by the equation h = -16t2 + 112t + 128.   After how many seconds does the object hit the ground? <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #99724 by </B><A HREF=/tutors/aboutme.mpl?userid=vleith><B>vleith(2983)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=vleith><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=99724\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Given: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h+=+-16t%5E2+%2B+112t+%2B+128 ALIGN=MIDDLE  ALT=\"h+=+-16t%5E2+%2B+112t+%2B+128\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "When does it hit the ground? Means, when does h = 0\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0+=+-16t%5E2+%2B+112t+%2B+128 ALIGN=MIDDLE  ALT=\"0+=+-16t%5E2+%2B+112t+%2B+128\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0+=+-t%5E2+%2B+7t+%2B+8 ALIGN=MIDDLE  ALT=\"0+=+-t%5E2+%2B+7t+%2B+8\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+0+=+t%5E2+-7t+-8 ALIGN=MIDDLE  ALT=\"+0+=+t%5E2+-7t+-8\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+0+=+%28t-8%29%28t%2B1%29 ALIGN=MIDDLE  ALT=\"+0+=+%28t-8%29%28t%2B1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "t = 8, -1\r<BR>\n" );
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document.write( "Since t cann hit the ground a second before you throw it, the only reasonable answer is 8 seconds.\r<BR>\n" );
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document.write( "Check your answer by using 8 for t and finding h </SPAN>\n" );
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