document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1182922>Question 1182922</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The average cost of a refrigerator is $700. On average, it costs $100 to provide the electricity for one year and the appliance will last for 15 years \r<BR>\n" );
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document.write( "a) Determine a function that gives the annual cost of a refrigerator as a function of the number of years you own the refrigerator. \r<BR>\n" );
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document.write( "b)Determine the total annual cost for the refrigerator (Make sure you include the cost of the electricity and remember, you have it for 15 years.\r<BR>\n" );
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document.write( "c) What are the asymptotes for this problem and what do they mean in the context of this problem? Is this realistic.\r<BR>\n" );
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document.write( "d) If another brand of the refrigerator costs $1000, but can last 20 years is it worth the difference in cost    </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #813477 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=813477\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The average cost is C(x)=(700+100x)/x<BR>\n" );
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document.write( "C(15)=(2200/15)=$146.67<BR>\n" );
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document.write( "the vertical asymptote is infinite cost at time 0, which makes no physical sense but is mathematically true.<BR>\n" );
document.write( "the horizontal asymptote is $100 per year after enough years that the original cost is insignificant compared to the amount of electricity paid for.\r<BR>\n" );
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document.write( "Looking at the average cost for 20 years, assuming everything else is the same except the original cost was $1000, and the average cost is (1000+2000)/20=$150.<BR>\n" );
document.write( "For an average cost of $3.33 more at the end one waits 5 more years before one must buy another refrigerator. </SPAN>\n" );
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