document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1165919>Question 1165919</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A school principal wants to install a wooden floor in a rectangular recreation room whose perimeter is 80 feet. When she talked to the laborer, she was told that the cost to install the floor is 800.00 pesos per square feet.\r<BR>\n" );
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document.write( "a. Write a function that defines the area of the room as a function to its length.<BR>\n" );
document.write( "b. Write a function for the cost to install the floor as a function of its area. \r<BR>\n" );
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document.write( "It’s about operation of function. Please help me. Thank you.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #790385 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39623)</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=790385\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "x, length<BR>\n" );
document.write( "y, width<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x%2B2y=80 ALIGN=MIDDLE  ALT=\"2x%2B2y=80\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2By=40 ALIGN=MIDDLE  ALT=\"x%2By=40\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=40-x ALIGN=MIDDLE  ALT=\"y=40-x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "A the  function for area:  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=x%2830-x%29 ALIGN=MIDDLE  ALT=\"A=x%2830-x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "C for cost function:  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C=800x%2840-x%29 ALIGN=MIDDLE  ALT=\"C=800x%2840-x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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