document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=58237>Question 58237</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mr. P's hybrid car costs 6 cents a mile to operate, and cost $25,000 to buy.  Ms. Sullivan's car costs $20,000 to buy and cost 10 cents a mile to operate.  Write an expression or equation for the cost to operate each car as a function with respect to the number of miles driven.  When will the cars have cost the same amount to operate? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #39978 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley71><B>checkley71(8403)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley71><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=39978\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 25000+.06X=20000+.10X<BR>\n" );
document.write( ".06X-.10X=20000-25000<BR>\n" );
document.write( "-.04X=-5000<BR>\n" );
document.write( "X=-5000/-.04<BR>\n" );
document.write( "X=125000 MILES DRIVEN <BR>\n" );
document.write( "PROOF<BR>\n" );
document.write( "25000+.06*125000=20000+.10*125000<BR>\n" );
document.write( "25000+7500=20000+12500<BR>\n" );
document.write( "32500=32500<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );