document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=910581>Question 910581</A>: <I><SPAN STYLE=\"word-break: break-all;\"> mark is piloting a plane at 12,000 feet and begins to descends at a rate of 250 feet per minute. At same time, Debbie is 6,000 feet in her plane and begins to climb at a rate of 60 feet per minute. write a system of equations representing the situation. \r<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 #552572 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=552572\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What you want is- if you know Mark's height,<BR>\n" );
document.write( "you can find Debbie's height and vice  versa<BR>\n" );
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document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+ ALIGN=MIDDLE  ALT=\"+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = time in minutes starting when Mark is at<BR>\n" );
document.write( "12,000 ft and Debbie is at 6,000 ft<BR>\n" );
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document.write( "Mark's equation:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+h%5Bm%5D+=+12000+-+250t+ ALIGN=MIDDLE  ALT=\"+h%5Bm%5D+=+12000+-+250t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Debbie's equation:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+h%5Bd%5D+=+6000+%2B+60t+ ALIGN=MIDDLE  ALT=\"+h%5Bd%5D+=+6000+%2B+60t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+Let+%7B%7B%7B+D+=+h%5Bm%5D+-+h%5Bd%5D+ ALIGN=MIDDLE  ALT=\"+Let+%7B%7B%7B+D+=+h%5Bm%5D+-+h%5Bd%5D+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+D+=+12000+-+250t+-+%28+6000+%2B+60t+%29+ ALIGN=MIDDLE  ALT=\"+D+=+12000+-+250t+-+%28+6000+%2B+60t+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+D+=+12000+-+250t+-+6000+-+60t+ ALIGN=MIDDLE  ALT=\"+D+=+12000+-+250t+-+6000+-+60t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+D+=+6000+-+310t+ ALIGN=MIDDLE  ALT=\"+D+=+6000+-+310t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "If you know one of their heights, you can find the other\r<BR>\n" );
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