document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1056202>Question 1056202</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane flying the&#8203; 3458-mi from New York City to London has a 70<BR>\n" );
document.write( "&#8203;-mph <BR>\n" );
document.write( "tailwind. The&#8203; flight's point of no return is the point at which the flight time required to return to New York is the same as the time required to continue to London. If the&#8203; plane's speed in still air is 900<BR>\n" );
document.write( " <BR>\n" );
document.write( "&#8203;mph, how far is New York from the point of no&#8203; return?<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 #671404 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=671404\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+ ALIGN=MIDDLE  ALT=\"+d+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = distance from point of no return to NYC<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3458+-+d+ ALIGN=MIDDLE  ALT=\"+3458+-+d+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = distance from point of no return to London<BR>\n" );
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 hrs to fly from point of no return<BR>\n" );
document.write( "back to NYC and also the time in hrs to London<BR>\n" );
document.write( "--------------------------------------------------------<BR>\n" );
document.write( "Equation for point of no return back to NYC<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+%28+900+-+70+%29%2At+ ALIGN=MIDDLE  ALT=\"+d+=+%28+900+-+70+%29%2At+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Equation for point of no return to London <BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3458+-+d+=+%28+900+%2B+70+%29%2At+ ALIGN=MIDDLE  ALT=\"+3458+-+d+=+%28+900+%2B+70+%29%2At+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-------------------------------------------------<BR>\n" );
document.write( "Note that you have to keep track of the wind direction.<BR>\n" );
document.write( "Substitute (1) into (2)<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3458+-+%28+900+-+70+%29%2At+=+%28+900+%2B+70+%29%2At+ ALIGN=MIDDLE  ALT=\"+3458+-+%28+900+-+70+%29%2At+=+%28+900+%2B+70+%29%2At+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3458+-+900t+%2B+70t+=+900t+%2B+70t+ ALIGN=MIDDLE  ALT=\"+3458+-+900t+%2B+70t+=+900t+%2B+70t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1800t+=+3458+ ALIGN=MIDDLE  ALT=\"+1800t+=+3458+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+1.921+ ALIGN=MIDDLE  ALT=\"+t+=+1.921+\"   DISABLED_style= \"max-width:90%; height:auto;\" > hrs<BR>\n" );
document.write( "This is 1 hr 55 min 16 sec<BR>\n" );
document.write( "-----------------------------<BR>\n" );
document.write( "Check:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+%28+900+-+70+%29%2At+ ALIGN=MIDDLE  ALT=\"+d+=+%28+900+-+70+%29%2At+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+830t+ ALIGN=MIDDLE  ALT=\"+d+=+830t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+830%2A1.921+ ALIGN=MIDDLE  ALT=\"+d+=+830%2A1.921+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+1594.43+ ALIGN=MIDDLE  ALT=\"+d+=+1594.43+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3458+-+d+=+%28+900+%2B+70+%29%2At+ ALIGN=MIDDLE  ALT=\"+3458+-+d+=+%28+900+%2B+70+%29%2At+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3458+-+d+=+970t+ ALIGN=MIDDLE  ALT=\"+3458+-+d+=+970t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+3458+-+970t+ ALIGN=MIDDLE  ALT=\"+d+=+3458+-+970t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+3458+-+970%2A1.921+ ALIGN=MIDDLE  ALT=\"+d+=+3458+-+970%2A1.921+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+3458+-+1863.37+ ALIGN=MIDDLE  ALT=\"+d+=+3458+-+1863.37+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+1594.63+ ALIGN=MIDDLE  ALT=\"+d+=+1594.63+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Close enough, I think -OK<BR>\n" );
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