document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=992280>Question 992280</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve\r<BR>\n" );
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document.write( "The butcher sells 80% lean ground beef at $2.80/lb, 90% lean ground beef at $3.00/lb, and 95% lean ground beef at $ 3.25/lb. What is the cost per pound of the totally lean percentage of the beef in each case? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #611896 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=611896\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> These are three points for the relation:<BR>\n" );
document.write( "(80,2.8),(90,3.0),(95,3.25).  The coordinates are  percent lean, price per pound.\r<BR>\n" );
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document.write( "Check the two neighboring slopes to find if the points fit a line.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28%283-2.8%29%2F10%2C0.25%2F5%29 ALIGN=MIDDLE  ALT=\"system%28%283-2.8%29%2F10%2C0.25%2F5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%280.2%2F10%2C0.25%2F5%29 ALIGN=MIDDLE  ALT=\"system%280.2%2F10%2C0.25%2F5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%281%2F50%2C1%2F20%29 ALIGN=MIDDLE  ALT=\"system%281%2F50%2C1%2F20%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
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document.write( "The slopes are different, so a line will not be a fit.\r<BR>\n" );
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document.write( "You are free to pick another function shape to try to extrapolate what the price could be for 100% lean beef.  You can plot the points and try to judge visually if you like.  \r<BR>\n" );
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document.write( "Also notice that the slopes seem to be getting bigger as percent leanness increases.  I did not finish this; the question is at least a bit open-ended. </SPAN>\n" );
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