document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=840764>Question 840764</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A rectangular box is to have a square base and a volume of 20 ft3. The material for the base costs 40¢/ft2, the material for the sides costs 10¢/ft2, and the material for the top costs 32¢/ft2. Letting x denote the length of one side of the base, find a function in the variable x giving the cost (in dollars) of constructing the box.\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #506435 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=506435\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A rectangular box is to have a square base and a volume of 20 ft3. The material for the base costs 40¢/ft2, the material for the sides costs 10¢/ft2, and the material for the top costs 32¢/ft2. Letting x denote the length of one side of the base, find a function in the variable x giving the cost (in dollars) of constructing the box.<BR>\n" );
document.write( ":<BR>\n" );
document.write( "The height<BR>\n" );
document.write( "h = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=20%2Fx%5E2 ALIGN=MIDDLE  ALT=\"20%2Fx%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( ":<BR>\n" );
document.write( "The base <BR>\n" );
document.write( ".40x^2<BR>\n" );
document.write( "The 4 sides<BR>\n" );
document.write( " 4(.10*x*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=20%2Fx%5E2 ALIGN=MIDDLE  ALT=\"20%2Fx%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >) = 4(.10*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=20%2Fx ALIGN=MIDDLE  ALT=\"20%2Fx\"   DISABLED_style= \"max-width:90%; height:auto;\" >) = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8%2Fx ALIGN=MIDDLE  ALT=\"8%2Fx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The top<BR>\n" );
document.write( ".32x^2<BR>\n" );
document.write( "Total cost<BR>\n" );
document.write( "c(x) = .4x^2 + .32x^2 + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8%2Fx ALIGN=MIDDLE  ALT=\"8%2Fx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "c(x) = .72x^2 + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8%2Fx ALIGN=MIDDLE  ALT=\"8%2Fx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ":<BR>\n" );
document.write( ":<BR>\n" );
document.write( "This is one of those problems I am not 100% sure about, if I screwed it up,<BR>\n" );
document.write( "would appreciate if you let me know. Where I screwed it up would be nice too.<BR>\n" );
document.write( "email me: ankor@att.net </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );