document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=520665>Question 520665</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Twice last month, Judy Carter rented a car from Enterprise in Fresno, California, and traveled around the southwest on business. Enterprise rents its cars for a daily fee, plus an additional charge per mile driven. Judy recalls that her first trip lasted 4 days, she drove 450 miles, and the rental cost her $240.50. One her second business trip she drove 200 miles in 3 days, and paid $146.00 for the rental. Fnd the daily fee and the mileage charge.\r<BR>\n" );
document.write( "\n" );
document.write( "I get so confused in all these numbers. How do I set up my equation? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #346171 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=346171\">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;\" > = daily fee in dollars<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+m ALIGN=MIDDLE  ALT=\"+m\"   DISABLED_style= \"max-width:90%; height:auto;\" > = milage charge in dollars<BR>\n" );
document.write( "In words:<BR>\n" );
document.write( "( Cost of rental ) = ( number of days rented )x( daily fee ) + ( miles driven )x( milage fee )<BR>\n" );
document.write( "For her first trip:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+240.5+=+4d+%2B+450m+ ALIGN=MIDDLE  ALT=\"+240.5+=+4d+%2B+450m+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "For her 2nd trip:<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+146+=+3d+%2B+200m+ ALIGN=MIDDLE  ALT=\"+146+=+3d+%2B+200m+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-------------------------<BR>\n" );
document.write( "Multiply both sides of (1) by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3+ ALIGN=MIDDLE  ALT=\"+3+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply both sides of (2) by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4+ ALIGN=MIDDLE  ALT=\"+4+\"   DISABLED_style= \"max-width:90%; height:auto;\" >,<BR>\n" );
document.write( "Then subtract (2) from (1)<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+721.5+=+12d+%2B+1350m+ ALIGN=MIDDLE  ALT=\"+721.5+=+12d+%2B+1350m+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-584+=+-12d+-+800m+ ALIGN=MIDDLE  ALT=\"+-584+=+-12d+-+800m+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+137.5+=+550m+ ALIGN=MIDDLE  ALT=\"+137.5+=+550m+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+m+=+.25+ ALIGN=MIDDLE  ALT=\"+m+=+.25+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and, since<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+146+=+3d+%2B+200m+ ALIGN=MIDDLE  ALT=\"+146+=+3d+%2B+200m+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+146+=+3d+%2B+200%2A.25+ ALIGN=MIDDLE  ALT=\"+146+=+3d+%2B+200%2A.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=+146+=+3d+%2B+50+ ALIGN=MIDDLE  ALT=\"+146+=+3d+%2B+50+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3d+=96+ ALIGN=MIDDLE  ALT=\"+3d+=96+\"   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+=+32+ ALIGN=MIDDLE  ALT=\"+d+=+32+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The rental cost is $32/day and $.25/mile<BR>\n" );
document.write( "check answer:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+240.5+=+4d+%2B+450m+ ALIGN=MIDDLE  ALT=\"+240.5+=+4d+%2B+450m+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+240.5+=+4%2A32+%2B+450%2A.25+ ALIGN=MIDDLE  ALT=\"+240.5+=+4%2A32+%2B+450%2A.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=+240.5+=+128+%2B+112.5+ ALIGN=MIDDLE  ALT=\"+240.5+=+128+%2B+112.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+240.5+=+240.5+ ALIGN=MIDDLE  ALT=\"+240.5+=+240.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );