document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=366807>Question 366807</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am having trouble with my Appendix D. This is what I hsve so far. Can someone let me know if I am on the right track?\r<BR>\n" );
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document.write( "Answer the following questions. Use Equation Editor to write mathematical expressions and equations. First, save this file to your hard drive by selecting Save As from the File menu. Click the white space below each question to maintain proper formatting. <BR>\n" );
document.write( "1.	The cost, in millions of dollars, to remove x % of pollution in a lake modeled by  C=5,000/300-3x<BR>\n" );
document.write( "a.	What is the cost to remove 60% of the pollutant?<BR>\n" );
document.write( "C=_5,000<BR>\n" );
document.write( "     	      300-3x<BR>\n" );
document.write( "C=5,000<BR>\n" );
document.write( "            300-3(60)<BR>\n" );
document.write( "C=5,000<BR>\n" );
document.write( "            300-180<BR>\n" );
document.write( "C=5,000<BR>\n" );
document.write( "            120<BR>\n" );
document.write( "       C=$42 million<BR>\n" );
document.write( "b.	What is the cost to remove 80 % of the pollutant?<BR>\n" );
document.write( "C=5,000<BR>\n" );
document.write( "            300-3x<BR>\n" );
document.write( "C=5,000<BR>\n" );
document.write( "     300-3(80)<BR>\n" );
document.write( "C=5,000<BR>\n" );
document.write( "    300-240<BR>\n" );
document.write( "			C=5,000<BR>\n" );
document.write( "                                  60<BR>\n" );
document.write( "			C=$83 million<BR>\n" );
document.write( "c.	What is the cost to remove 95% of the pollutant?<BR>\n" );
document.write( "C=5,000<BR>\n" );
document.write( "		     300-3x<BR>\n" );
document.write( "		C=5,000<BR>\n" );
document.write( "                   300-3(95)<BR>\n" );
document.write( "		C=5,000<BR>\n" );
document.write( "                    300-285<BR>\n" );
document.write( "		C=5,000<BR>\n" );
document.write( "                      15<BR>\n" );
document.write( "		C=$333 million<BR>\n" );
document.write( "d.	For what value is this equation undefined?<BR>\n" );
document.write( "The equation is undefined when x=100, and that’s because the bottom of the fraction =0, at x=100.<BR>\n" );
document.write( "300-3x<BR>\n" );
document.write( "300-3x-3x-3x<BR>\n" );
document.write( "x=100<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #261486 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=261486\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1. The cost, in millions of dollars, to remove x % of pollution in a lake modeled by C=5,000/300-3x<BR>\n" );
document.write( "a. What is the cost to remove 60% of the pollutant?<BR>\n" );
document.write( "C=_5,000<BR>\n" );
document.write( "300-3x<BR>\n" );
document.write( "C=5,000<BR>\n" );
document.write( "300-3(60)<BR>\n" );
document.write( "C=5,000<BR>\n" );
document.write( "300-180<BR>\n" );
document.write( "C=5,000<BR>\n" );
document.write( "120<BR>\n" );
document.write( "C=$42 million<BR>\n" );
document.write( "---<BR>\n" );
document.write( "OK<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "b. What is the cost to remove 80 % of the pollutant?<BR>\n" );
document.write( "C=5,000<BR>\n" );
document.write( "300-3x<BR>\n" );
document.write( "C=5,000<BR>\n" );
document.write( "300-3(80)<BR>\n" );
document.write( "C=5,000<BR>\n" );
document.write( "300-240<BR>\n" );
document.write( "C=5,000<BR>\n" );
document.write( "60<BR>\n" );
document.write( "C=$83 million<BR>\n" );
document.write( "----<BR>\n" );
document.write( "OK<BR>\n" );
document.write( "------<BR>\n" );
document.write( "c. What is the cost to remove 95% of the pollutant?<BR>\n" );
document.write( "C=5,000<BR>\n" );
document.write( "300-3x<BR>\n" );
document.write( "C=5,000<BR>\n" );
document.write( "300-3(95)<BR>\n" );
document.write( "C=5,000<BR>\n" );
document.write( "300-285<BR>\n" );
document.write( "C=5,000<BR>\n" );
document.write( "15<BR>\n" );
document.write( "C=$333 million<BR>\n" );
document.write( "---<BR>\n" );
document.write( "OK<BR>\n" );
document.write( "------<BR>\n" );
document.write( "d. For what value is this equation undefined?<BR>\n" );
document.write( "The equation is undefined when x=100, and that’s because the bottom of the fraction =0, at x=100.<BR>\n" );
document.write( "300-3x<BR>\n" );
document.write( "300-3x-3x-3x<BR>\n" );
document.write( "x=100<BR>\n" );
document.write( "----<BR>\n" );
document.write( "OK<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "==============\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );