document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=293795>Question 293795</A>: <I><SPAN STYLE=\"word-break: break-all;\">  A fence is to be built to enclose a rectangular area of 290 square feet. The fence along three sides is to be made of material that costs 3 dollars per foot, and the material for the fourth side costs 15 dollars per foot. Find the length  and width  (with ) of the enclosure that is most economical to construct.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #212109 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=212109\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A fence is to be built to enclose a rectangular area of 290 square feet.<BR>\n" );
document.write( " The fence along three sides is to be made of material that costs 3 dollars per foot,<BR>\n" );
document.write( " and the material for the fourth side costs 15 dollars per foot.<BR>\n" );
document.write( " Find the length and width (with ) of the enclosure that is most economical to construct.<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Area: L * W = 290<BR>\n" );
document.write( "W = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=290%2FL ALIGN=MIDDLE  ALT=\"290%2FL\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ":<BR>\n" );
document.write( "Cost:<BR>\n" );
document.write( "C = 15L + 3L + 3(2W)<BR>\n" );
document.write( "C = 18L + 6W<BR>\n" );
document.write( "Replace W with <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=290%2FL ALIGN=MIDDLE  ALT=\"290%2FL\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "C = 18L + 6(<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=290%2FL ALIGN=MIDDLE  ALT=\"290%2FL\"   DISABLED_style= \"max-width:90%; height:auto;\" >)<BR>\n" );
document.write( "C = 18L + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1740%2FL ALIGN=MIDDLE  ALT=\"1740%2FL\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ":<BR>\n" );
document.write( "Plot this equation, cost on the vertical, Length on the horizontal<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+200%2C+-6%2C+16%2C+-100%2C+1000%2C+18x%2B%281740%2Fx%29%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+200%2C+-6%2C+16%2C+-100%2C+1000%2C+18x%2B%281740%2Fx%29%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ":<BR>\n" );
document.write( "Minimum cost occurs when Length = 10 ft, then <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=290%2F10 ALIGN=MIDDLE  ALT=\"290%2F10\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 29 ft is the width </SPAN>\n" );
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