document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=503648>Question 503648</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A farmer has available 400 yards of fencing and wishes to enclose a rectangular area. Express the area, A, of the rectangle as a function of the width, x, of the rectangle. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #339335 by </B><A HREF=/tutors/aboutme.mpl?userid=oberobic><B>oberobic(2304)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=oberobic><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=339335\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x = width<BR>\n" );
document.write( "y = length<BR>\n" );
document.write( ".<BR>\n" );
document.write( "p = perimeter<BR>\n" );
document.write( "p = 2(x + y)<BR>\n" );
document.write( "p = 400 yd<BR>\n" );
document.write( ".<BR>\n" );
document.write( "2(x+y) = 400<BR>\n" );
document.write( "x+y = 200<BR>\n" );
document.write( "y = 200-x<BR>\n" );
document.write( ".<BR>\n" );
document.write( "a = area<BR>\n" );
document.write( "a = x*y<BR>\n" );
document.write( ".<BR>\n" );
document.write( "substitute for y<BR>\n" );
document.write( ".<BR>\n" );
document.write( "a = x(200-x)<BR>\n" );
document.write( "a = 200x -x^2<BR>\n" );
document.write( ".<BR>\n" );
document.write( "done. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );