document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=626098>Question 626098</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I would like someone to double check my work because something just does seem right to me.1.	The cost, in millions of dollars, to remove x % of pollution in a lake is modeled by 6000+20(x)/300-3(x) .  Hint: Example, if x%=30%, then use x=30 in the C formula (do not convert x to a decimal)<BR>\n" );
document.write( "a.	What is the cost to remove 65% of the pollutant?(show work) <BR>\n" );
document.write( "C= 6000+20(65)/300-3(65)<BR>\n" );
document.write( "=7300/105<BR>\n" );
document.write( "C=69.5<BR>\n" );
document.write( "It would cost around 69.5 million dollars to remove 65% of the pollutant in the lake.\r<BR>\n" );
document.write( "\n" );
document.write( "b.	What is the cost to remove 85% of the pollutant?(show work)<BR>\n" );
document.write( " C=6000+20(85)/300-3(85)<BR>\n" );
document.write( "=7700/45<BR>\n" );
document.write( "C=171.1<BR>\n" );
document.write( "It would cost 171.1 million dollars to remove 85%of the pollutant in the lake.<BR>\n" );
document.write( "c.	What is the cost to remove 98% of the pollutant?(show work)<BR>\n" );
document.write( " C=6000+20(98)/300-3(98)<BR>\n" );
document.write( "=7960/6<BR>\n" );
document.write( "C=1326 (rounded)<BR>\n" );
document.write( "I(t would cost 1326 million dollars to remove 98% of the pollutant in the lake.<BR>\n" );
document.write( "d.For what value is this equation undefined?(show work)<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 #393977 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=393977\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The cost, in millions of dollars, to remove x % of pollution in a lake is modeled by 6000+20(x)/300-3(x) .  Hint: Example, if x%=30%, then use x=30 in the C formula (do not convert x to a decimal)<BR>\n" );
document.write( "a.	What is the cost to remove 65% of the pollutant?(show work) <BR>\n" );
document.write( "C= 6000+20(65)/300-3(65)<BR>\n" );
document.write( "=7300/105<BR>\n" );
document.write( "C=69.5<BR>\n" );
document.write( "It would cost around 69.5 million dollars to remove 65% of the pollutant in the lake.\r<BR>\n" );
document.write( "\n" );
document.write( "b.	What is the cost to remove 85% of the pollutant?(show work)<BR>\n" );
document.write( " C=6000+20(85)/300-3(85)<BR>\n" );
document.write( "=7700/45<BR>\n" );
document.write( "C=171.1<BR>\n" );
document.write( "It would cost 171.1 million dollars to remove 85%of the pollutant in the lake.<BR>\n" );
document.write( "c.	What is the cost to remove 98% of the pollutant?(show work)<BR>\n" );
document.write( " C=6000+20(98)/300-3(98)<BR>\n" );
document.write( "=7960/6<BR>\n" );
document.write( "C=1326 (rounded)<BR>\n" );
document.write( "I(t would cost 1326 million dollars to remove 98% of the pollutant in the lake.<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "Your answers are correct.<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "d.For what value is this equation undefined?(show work)\r<BR>\n" );
document.write( "\n" );
document.write( "It's undefined if the denominator = zero, which is removing 100%<BR>\n" );
document.write( "----------<BR>\n" );
document.write( "300 - 3x = 0<BR>\n" );
document.write( "x = 100 --> undefined<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );