document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1068245>Question 1068245</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An entrepreneur builds and sells computers in his store. His cost per computer is $550 after start-up costs of $10,000. His revenue for selling each computer is $1199.99. Assume that he sells every computer he builds. Recall and use the complete function definition form whenever it says \"Define a function.\"\r<BR>\n" );
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document.write( "1. Define a function f that expresses his total cost as a function of x, the number of computers he builds. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #683483 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=683483\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> c = cost.<BR>\n" );
document.write( "r = revenue<BR>\n" );
document.write( "x = number of computers.\r<BR>\n" );
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document.write( "c = 10,000 + 550 * x.\r<BR>\n" );
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document.write( "r = 1199.99 * x.\r<BR>\n" );
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document.write( "if you let f(x) = c, then the function becomes:\r<BR>\n" );
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document.write( "c = f(x) = 10,000 + 550 * x.\r<BR>\n" );
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document.write( "what this says is that c is a function of x, which means that the argument of the function is the variable x which represents the number of computers.\r<BR>\n" );
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document.write( "you also have a profit equation (p = profit).\r<BR>\n" );
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document.write( "that equation is:\r<BR>\n" );
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document.write( "p = r - e\r<BR>\n" );
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document.write( "you also have a breakeven equaton.\r<BR>\n" );
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document.write( "that happens when the revenue is equal to the expense.\r<BR>\n" );
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document.write( "that equation becomes r = e\r<BR>\n" );
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document.write( "the answer to your question, however is:\r<BR>\n" );
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document.write( "the cost function is c = f(x) = 10,000 + 550 * x.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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