document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=333874>Question 333874</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose that a rectangle has a perimeter of 20 meters. Express the area A(x) of the rectangle in terms of the length x of one of its sides. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #239240 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=239240\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Suppose that a rectangle has a perimeter of 20 meters.<BR>\n" );
document.write( " Express the area A(x) of the rectangle in terms of the length x of one of its sides.<BR>\n" );
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document.write( "Let w = the width, x = the length<BR>\n" );
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document.write( "2x + 2w = 20<BR>\n" );
document.write( "Simplify, divide by 2<BR>\n" );
document.write( "x + w = 10<BR>\n" );
document.write( "w = (10-x)<BR>\n" );
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document.write( "Area<BR>\n" );
document.write( "A = x*w<BR>\n" );
document.write( "replace w with (10-x)<BR>\n" );
document.write( "A(x) = x(10-x)<BR>\n" );
document.write( "A(x) = -x^2 + 10x<BR>\n" );
document.write( " </SPAN>\n" );
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