document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=729735>Question 729735</A>: <I><SPAN STYLE=\"word-break: break-all;\">  \"nancy and mark commute to work, traveling in opposite directions. Nancy leaves the house at 7am and averages 30 mph. mark leaves at 7:15 and averages 40 mph. at what time will they be 165 miles apart\". </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #446190 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=446190\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Nancy has <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F4+ ALIGN=MIDDLE  ALT=\"+1%2F4+\"   DISABLED_style= \"max-width:90%; height:auto;\" > hr head start.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d%5B1%5D+=+30%2A%281%2F4%29+=+7.5+ ALIGN=MIDDLE  ALT=\"+d%5B1%5D+=+30%2A%281%2F4%29+=+7.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" > mi is her head start<BR>\n" );
document.write( "Start a stopwatch when Mark leaves and stop<BR>\n" );
document.write( "it when they are <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+165+ ALIGN=MIDDLE  ALT=\"+165+\"   DISABLED_style= \"max-width:90%; height:auto;\" > mi apart.<BR>\n" );
document.write( "------------------------------<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;\" > = the time on the stopwatch when stopped<BR>\n" );
document.write( "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 in miles Nancy travels in time <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+ ALIGN=MIDDLE  ALT=\"+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+165+-+%28+d+%2B+7.5+%29+ ALIGN=MIDDLE  ALT=\"+165+-+%28+d+%2B+7.5+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = distance in miles Mark travels in time <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+ ALIGN=MIDDLE  ALT=\"+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "------------------------------<BR>\n" );
document.write( "Nancy's equation:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=++30t+ ALIGN=MIDDLE  ALT=\"+d+=++30t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Mark's equation:<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+165+-+%28+d+%2B+7.5+%29+=+40t+ ALIGN=MIDDLE  ALT=\"+165+-+%28+d+%2B+7.5+%29+=+40t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "---------------------------<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+165+-+d+-+7.5+=+40t+ ALIGN=MIDDLE  ALT=\"+165+-+d+-+7.5+=+40t+\"   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+%2B+40t+=+157.5+ ALIGN=MIDDLE  ALT=\"+d+%2B+40t+=+157.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><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=+30t+%2B+40t+=+157.5+ ALIGN=MIDDLE  ALT=\"+30t+%2B+40t+=+157.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+70t+=+157.5+ ALIGN=MIDDLE  ALT=\"+70t+=+157.5+\"   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+=+2.25+ ALIGN=MIDDLE  ALT=\"+t+=+2.25+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "7:15 AM + 2.25 hrs = 9:40 AM<BR>\n" );
document.write( "They are 165 mi apart at 9:40 AM<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=++30t+ ALIGN=MIDDLE  ALT=\"+d+=++30t+\"   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+=++30%2A2.25+ ALIGN=MIDDLE  ALT=\"+d+=++30%2A2.25+\"   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+=+67.5+ ALIGN=MIDDLE  ALT=\"+d+=+67.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+165+-+%28+d+%2B+7.5+%29+=+40t+ ALIGN=MIDDLE  ALT=\"+165+-+%28+d+%2B+7.5+%29+=+40t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+165+-+%28+d+%2B+7.5+%29+=+40%2A2.25+ ALIGN=MIDDLE  ALT=\"+165+-+%28+d+%2B+7.5+%29+=+40%2A2.25+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+165+-+7.5+-+d+=+90+ ALIGN=MIDDLE  ALT=\"+165+-+7.5+-+d+=+90+\"   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+=+165+-+97.5+ ALIGN=MIDDLE  ALT=\"+d+=+165+-+97.5+\"   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+=+67.5+ ALIGN=MIDDLE  ALT=\"+d+=+67.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK\r<BR>\n" );
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document.write( " </SPAN>\n" );
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