document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=173044>Question 173044</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this equation:\r<BR>\n" );
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document.write( "You commute 56 miles one way to work. The trip to work takes 10 minutes longer than the trip to home. Your average speed on the trip home is 8 miles per hour faster. What is your average speed on the trip home?\r<BR>\n" );
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document.write( "thank you!!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #127895 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=127895\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Note: 10 minutes = 1/6 of an hour\r<BR>\n" );
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document.write( "Since the distance of the commute is 56 miles, this means that <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d=56 ALIGN=MIDDLE  ALT=\"d=56\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Going to Work:\r<BR>\n" );
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document.write( "Since \"The trip to work takes 10 minutes longer than the trip to home\", this means that the time is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%2B10 ALIGN=MIDDLE  ALT=\"t%2B10\"   DISABLED_style= \"max-width:90%; height:auto;\" > (in minutes) or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%2B1%2F6 ALIGN=MIDDLE  ALT=\"t%2B1%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > (in hours)\r<BR>\n" );
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document.write( "We'll use the expression <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%2B1%2F6 ALIGN=MIDDLE  ALT=\"t%2B1%2F6\"   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=d=rt ALIGN=MIDDLE  ALT=\"d=rt\"   DISABLED_style= \"max-width:90%; height:auto;\" > Start with the distance rate time formula\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=56=r%28t%2B1%2F6%29 ALIGN=MIDDLE  ALT=\"56=r%28t%2B1%2F6%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Plug in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d=56 ALIGN=MIDDLE  ALT=\"d=56\"   DISABLED_style= \"max-width:90%; height:auto;\" > and replace \"t\" with <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%2B1%2F6 ALIGN=MIDDLE  ALT=\"t%2B1%2F6\"   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=56=r%28%286t%2B1%29%2F6%29 ALIGN=MIDDLE  ALT=\"56=r%28%286t%2B1%29%2F6%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Combine <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t ALIGN=MIDDLE  ALT=\"t\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F6 ALIGN=MIDDLE  ALT=\"1%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > to get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%286t%2B1%29%2F6 ALIGN=MIDDLE  ALT=\"%286t%2B1%29%2F6\"   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=56%2F%28%286t%2B1%29%2F6%29=r ALIGN=MIDDLE  ALT=\"56%2F%28%286t%2B1%29%2F6%29=r\"   DISABLED_style= \"max-width:90%; height:auto;\" > Divide both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%286t%2B1%29%2F6 ALIGN=MIDDLE  ALT=\"%286t%2B1%29%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > to isolate \"r\"\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=56%286%2F%286t%2B1%29%29=r ALIGN=MIDDLE  ALT=\"56%286%2F%286t%2B1%29%29=r\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply 56 by the reciprocal of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%286t%2B1%29%2F6 ALIGN=MIDDLE  ALT=\"%286t%2B1%29%2F6\"   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=336%2F%286t%2B1%29=r ALIGN=MIDDLE  ALT=\"336%2F%286t%2B1%29=r\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply 56 and 6 to get 336\r<BR>\n" );
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document.write( "So after isolating \"r\", we get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r=336%2F%286t%2B1%29 ALIGN=MIDDLE  ALT=\"r=336%2F%286t%2B1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "----------------------------------\r<BR>\n" );
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document.write( "Coming Home:\r<BR>\n" );
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document.write( "Now because the \"average speed on the trip home is 8 miles per hour faster\", this means that the new rate is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%2B8 ALIGN=MIDDLE  ALT=\"r%2B8\"   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=d=rt ALIGN=MIDDLE  ALT=\"d=rt\"   DISABLED_style= \"max-width:90%; height:auto;\" > Go back to the distance rate time formula\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=56=%28r%2B8%29t ALIGN=MIDDLE  ALT=\"56=%28r%2B8%29t\"   DISABLED_style= \"max-width:90%; height:auto;\" > Plug in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d=56 ALIGN=MIDDLE  ALT=\"d=56\"   DISABLED_style= \"max-width:90%; height:auto;\" > (the commute distance hasn't changed) and replace \"r\" with <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%2B8 ALIGN=MIDDLE  ALT=\"r%2B8\"   DISABLED_style= \"max-width:90%; height:auto;\" > (since the speed is 8 mph greater)\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=56=%28336%2F%286t%2B1%29%2B8%29t ALIGN=MIDDLE  ALT=\"56=%28336%2F%286t%2B1%29%2B8%29t\"   DISABLED_style= \"max-width:90%; height:auto;\" > Plug in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r=336%2F%286t%2B1%29 ALIGN=MIDDLE  ALT=\"r=336%2F%286t%2B1%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=56=%28336%2F%286t%2B1%29%29t%2B8t ALIGN=MIDDLE  ALT=\"56=%28336%2F%286t%2B1%29%29t%2B8t\"   DISABLED_style= \"max-width:90%; height:auto;\" > Distribute\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=56%286t%2B1%29=336t%2B8t%286t%2B1%29 ALIGN=MIDDLE  ALT=\"56%286t%2B1%29=336t%2B8t%286t%2B1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply EVERY term by the LCD <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6t%2B1 ALIGN=MIDDLE  ALT=\"6t%2B1\"   DISABLED_style= \"max-width:90%; height:auto;\" > to clear the fractions.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=336t%2B56=336t%2B48t%5E2%2B8t ALIGN=MIDDLE  ALT=\"336t%2B56=336t%2B48t%5E2%2B8t\"   DISABLED_style= \"max-width:90%; height:auto;\" > Distribute\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0=336t%2B48t%5E2%2B8t-336t-56 ALIGN=MIDDLE  ALT=\"0=336t%2B48t%5E2%2B8t-336t-56\"   DISABLED_style= \"max-width:90%; height:auto;\" > Subtract 336t from both sides. Subtract 56 from both sides.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0=48t%5E2%2B8t-56 ALIGN=MIDDLE  ALT=\"0=48t%5E2%2B8t-56\"   DISABLED_style= \"max-width:90%; height:auto;\" > Combine like terms.\r<BR>\n" );
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document.write( "Notice we have a quadratic equation in the form of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=at%5E2%2Bbt%2Bc ALIGN=MIDDLE  ALT=\"at%5E2%2Bbt%2Bc\"   DISABLED_style= \"max-width:90%; height:auto;\" > where <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a=48 ALIGN=MIDDLE  ALT=\"a=48\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=8 ALIGN=MIDDLE  ALT=\"b=8\"   DISABLED_style= \"max-width:90%; height:auto;\" >, and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c=-56 ALIGN=MIDDLE  ALT=\"c=-56\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Let's use the quadratic formula to solve for t\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28-b+%2B-+sqrt%28+b%5E2-4ac+%29%29%2F%282a%29 ALIGN=MIDDLE  ALT=\"t+=+%28-b+%2B-+sqrt%28+b%5E2-4ac+%29%29%2F%282a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Start with the 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-%288%29+%2B-+sqrt%28+%288%29%5E2-4%2848%29%28-56%29+%29%29%2F%282%2848%29%29 ALIGN=MIDDLE  ALT=\"t+=+%28-%288%29+%2B-+sqrt%28+%288%29%5E2-4%2848%29%28-56%29+%29%29%2F%282%2848%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Plug in  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a=48 ALIGN=MIDDLE  ALT=\"a=48\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=8 ALIGN=MIDDLE  ALT=\"b=8\"   DISABLED_style= \"max-width:90%; height:auto;\" >, and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c=-56 ALIGN=MIDDLE  ALT=\"c=-56\"   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+=+%28-8+%2B-+sqrt%28+64-4%2848%29%28-56%29+%29%29%2F%282%2848%29%29 ALIGN=MIDDLE  ALT=\"t+=+%28-8+%2B-+sqrt%28+64-4%2848%29%28-56%29+%29%29%2F%282%2848%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Square <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8 ALIGN=MIDDLE  ALT=\"8\"   DISABLED_style= \"max-width:90%; height:auto;\" > to get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=64 ALIGN=MIDDLE  ALT=\"64\"   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+=+%28-8+%2B-+sqrt%28+64--10752+%29%29%2F%282%2848%29%29 ALIGN=MIDDLE  ALT=\"t+=+%28-8+%2B-+sqrt%28+64--10752+%29%29%2F%282%2848%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%2848%29%28-56%29 ALIGN=MIDDLE  ALT=\"4%2848%29%28-56%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > to get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-10752 ALIGN=MIDDLE  ALT=\"-10752\"   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+=+%28-8+%2B-+sqrt%28+64%2B10752+%29%29%2F%282%2848%29%29 ALIGN=MIDDLE  ALT=\"t+=+%28-8+%2B-+sqrt%28+64%2B10752+%29%29%2F%282%2848%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Rewrite <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%2864--10752%29 ALIGN=MIDDLE  ALT=\"sqrt%2864--10752%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > as <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%2864%2B10752%29 ALIGN=MIDDLE  ALT=\"sqrt%2864%2B10752%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+=+%28-8+%2B-+sqrt%28+10816+%29%29%2F%282%2848%29%29 ALIGN=MIDDLE  ALT=\"t+=+%28-8+%2B-+sqrt%28+10816+%29%29%2F%282%2848%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Add <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=64 ALIGN=MIDDLE  ALT=\"64\"   DISABLED_style= \"max-width:90%; height:auto;\" > to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10752 ALIGN=MIDDLE  ALT=\"10752\"   DISABLED_style= \"max-width:90%; height:auto;\" > to get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10816 ALIGN=MIDDLE  ALT=\"10816\"   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+=+%28-8+%2B-+sqrt%28+10816+%29%29%2F%2896%29 ALIGN=MIDDLE  ALT=\"t+=+%28-8+%2B-+sqrt%28+10816+%29%29%2F%2896%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2 ALIGN=MIDDLE  ALT=\"2\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=48 ALIGN=MIDDLE  ALT=\"48\"   DISABLED_style= \"max-width:90%; height:auto;\" > to get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=96 ALIGN=MIDDLE  ALT=\"96\"   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+=+%28-8+%2B-+104%29%2F%2896%29 ALIGN=MIDDLE  ALT=\"t+=+%28-8+%2B-+104%29%2F%2896%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Take the square root of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10816 ALIGN=MIDDLE  ALT=\"10816\"   DISABLED_style= \"max-width:90%; height:auto;\" > to get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=104 ALIGN=MIDDLE  ALT=\"104\"   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+=+%28-8+%2B+104%29%2F%2896%29 ALIGN=MIDDLE  ALT=\"t+=+%28-8+%2B+104%29%2F%2896%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28-8+-+104%29%2F%2896%29 ALIGN=MIDDLE  ALT=\"t+=+%28-8+-+104%29%2F%2896%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Break up the expression. \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%2896%29%2F%2896%29 ALIGN=MIDDLE  ALT=\"t+=+%2896%29%2F%2896%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=++%28-112%29%2F%2896%29 ALIGN=MIDDLE  ALT=\"t+=++%28-112%29%2F%2896%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Combine like terms. \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+1 ALIGN=MIDDLE  ALT=\"t+=+1\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+-7%2F6 ALIGN=MIDDLE  ALT=\"t+=+-7%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > Simplify. \r<BR>\n" );
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document.write( "So the possible time values (coming home) are <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+1 ALIGN=MIDDLE  ALT=\"t+=+1\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+-7%2F6 ALIGN=MIDDLE  ALT=\"t+=+-7%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "However a negative time does NOT make sense. So the only answer is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+1 ALIGN=MIDDLE  ALT=\"t+=+1\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "So the time to commute home is 1 hour. \r<BR>\n" );
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document.write( "Note: This means that the time to get to work is 1 hour and 10 minutes (or 70 minutes)\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d=rt ALIGN=MIDDLE  ALT=\"d=rt\"   DISABLED_style= \"max-width:90%; height:auto;\" > Go back to the distance rate time formula\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=56=r%281%29 ALIGN=MIDDLE  ALT=\"56=r%281%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Plug in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d=56 ALIGN=MIDDLE  ALT=\"d=56\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=1 ALIGN=MIDDLE  ALT=\"t=1\"   DISABLED_style= \"max-width:90%; height:auto;\" > (which is the time coming home)<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=56=r ALIGN=MIDDLE  ALT=\"56=r\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply\r<BR>\n" );
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document.write( "Answer:\r<BR>\n" );
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document.write( "So the solution is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r=56 ALIGN=MIDDLE  ALT=\"r=56\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "This means that the average speed coming home is 56 miles per hour.<BR>\n" );
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