document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=595766>Question 595766</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An arrow shot into the air is 160t-4.9t^2 meters above the ground t seconds after its released. During what period(s) of time is the arrow below 117.6 meters? Round your answer to the nearest .01 second. <BR>\n" );
document.write( "A) t<0.75 and t>31.90 seconds <BR>\n" );
document.write( "B) t<8.65 and t> 24 seconds <BR>\n" );
document.write( "C)0.75<t<31.90 seconds<BR>\n" );
document.write( "D) 8.65<t<24 seconds <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #377297 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=377297\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An arrow shot into the air is 160t-4.9t^2 meters above the ground t seconds after its released. During what period(s) of time is the arrow below 117.6 meters? Round your answer to the nearest .01 second. <BR>\n" );
document.write( "**<BR>\n" );
document.write( "f(t)=160t-4.9t^2<BR>\n" );
document.write( "117.6=160t-4.9t^2<BR>\n" );
document.write( "4.9t^2-160t+117.6=0<BR>\n" );
document.write( "use following quadratic formula to solve for t<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "a=4.9, b=160, c=117.6<BR>\n" );
document.write( "t=.75 and 31.90 seconds<BR>\n" );
document.write( "answer A </SPAN>\n" );
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