document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1153455>Question 1153455</A>: <I><SPAN STYLE=\"word-break: break-all;\">  NASA launches a rocket at t=0 seconds. Its height, in meters above sea-level, as a function of time is given by h(t)=−4.9t2+217t+185. <BR>\n" );
document.write( "Assuming that the rocket will splash down into the ocean, at what time does splashdown occur? <BR>\n" );
document.write( "The rocket splashes down after ________ seconds. <BR>\n" );
document.write( "How high above sea-level does the rocket get at its peak? <BR>\n" );
document.write( "The rocket peaks at __________ meters above sea-level.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #775675 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=775675\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "NASA launches a rocket at <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=0 ALIGN=MIDDLE  ALT=\"t=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > seconds. Its height, in meters above sea-level, as a function of time is given by \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%28t%29=-4.9t%5E2%2B217t%2B185 ALIGN=MIDDLE  ALT=\"h%28t%29=-4.9t%5E2%2B217t%2B185\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Assuming that the rocket will splash down into the ocean, at what time does splashdown occur?\r<BR>\n" );
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document.write( "will occur when <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%28t%29=0 ALIGN=MIDDLE  ALT=\"h%28t%29=0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0=-4.9t%5E2%2B217t%2B185 ALIGN=MIDDLE  ALT=\"0=-4.9t%5E2%2B217t%2B185\"   DISABLED_style= \"max-width:90%; height:auto;\" >.........use quadratic formula\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28-217+%2B-+sqrt%28+217%5E2-4%2A%28-4.9%29%2A185+%29%29%2F%282%2A%28-4.9%29%29+ ALIGN=MIDDLE  ALT=\"t+=+%28-217+%2B-+sqrt%28+217%5E2-4%2A%28-4.9%29%2A185+%29%29%2F%282%2A%28-4.9%29%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28-217+%2B-+sqrt%28+47089%2B3626+%29%29%2F%28-9.8%29+ ALIGN=MIDDLE  ALT=\"t+=+%28-217+%2B-+sqrt%28+47089%2B3626+%29%29%2F%28-9.8%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28-217+%2B-+sqrt%28+50715%29%29%2F%28-9.8%29+ ALIGN=MIDDLE  ALT=\"t+=+%28-217+%2B-+sqrt%28+50715%29%29%2F%28-9.8%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28-217+%2B-+225.1999%29%2F%28-9.8%29+ ALIGN=MIDDLE  ALT=\"t+=+%28-217+%2B-+225.1999%29%2F%28-9.8%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "solutions: we need only positive solution\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28-217+-+225.1999%29%2F%28-9.8%29+ ALIGN=MIDDLE  ALT=\"t+=+%28-217+-+225.1999%29%2F%28-9.8%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+-%28217%2B225.1999%29%2F%28-9.8%29+ ALIGN=MIDDLE  ALT=\"t+=+-%28217%2B225.1999%29%2F%28-9.8%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28217%2B225.1999%29%2F9.8+ ALIGN=MIDDLE  ALT=\"t+=+%28217%2B225.1999%29%2F9.8+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=45.1224 ALIGN=MIDDLE  ALT=\"t+=45.1224\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The rocket splashes down after ___<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=45.1224 ALIGN=MIDDLE  ALT=\"t+=45.1224\"   DISABLED_style= \"max-width:90%; height:auto;\" >_____ seconds.\r<BR>\n" );
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document.write( "How high above sea-level does the rocket get at its peak?\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%28t%29=-4.9t%5E2%2B217t%2B185 ALIGN=MIDDLE  ALT=\"h%28t%29=-4.9t%5E2%2B217t%2B185\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "max occurs when <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+-b%2F%282a%29=-217%2F%282%28-4.9%29%29=-217%2F-9.8=22.14+ ALIGN=MIDDLE  ALT=\"t+=+-b%2F%282a%29=-217%2F%282%28-4.9%29%29=-217%2F-9.8=22.14+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%2822.14+%29=-4.9%2822.14+%29%5E2%2B217%2A22.14+%2B185 ALIGN=MIDDLE  ALT=\"h%2822.14+%29=-4.9%2822.14+%29%5E2%2B217%2A22.14+%2B185\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%2822.14+%29=2587.5 ALIGN=MIDDLE  ALT=\"h%2822.14+%29=2587.5\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The rocket peaks at ____<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2587.5 ALIGN=MIDDLE  ALT=\"2587.5\"   DISABLED_style= \"max-width:90%; height:auto;\" >______ meters above sea-level.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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