document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1188455>Question 1188455</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A rule of thumb states that cars in personal use depreciate by 9% each year. Suppose a new car is purchased for $30000. What is the difference equation, explicit formula, and value of the car after 5 years? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #819539 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52803)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=819539\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .\r<BR>\n" );
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document.write( "In &nbsp;Math, &nbsp;there are two traditional forms to write &nbsp;(to determine) &nbsp;a depreciation function.\r<BR>\n" );
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document.write( "One way is to use a linear function;  &nbsp;&nbsp;the other way is to use an exponential function.\r<BR>\n" );
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document.write( "THEREFORE, &nbsp;if a &nbsp;Math problem talks about depreciation function,\r<BR>\n" );
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document.write( "it &nbsp;MUST &nbsp;determine &nbsp;WHICH &nbsp;ONE &nbsp;of &nbsp;TWO &nbsp;POSSIBLE &nbsp;definitions is used.\r<BR>\n" );
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document.write( "It is the way to distinct a mathematically correct formulation from illiterate one . . . \r<BR>\n" );
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