document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1042478>Question 1042478</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this problem:\r<BR>\n" );
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document.write( "Amanda is having new tile installed in her kitchen. TileAll charges a flat fee of $378.00 plus $15.00 per tile. KitchenPlus charges a flat fee of $550.00 plus $14.50 per tile. Amanda has a 10% discount coupon at KitchenPlus. \r<BR>\n" );
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document.write( "If Amanda purchases x tiles, what will the following expression be to model the average cost per tile at KitchenPlus.\r<BR>\n" );
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document.write( "How many tiles does Amanda have to order for the average cost per tile to be equal at both TileAll and KitchenPlus?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #657453 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=657453\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Please help me solve this problem: <BR>\n" );
document.write( "Amanda is having new tile installed in her kitchen. <BR>\n" );
document.write( "TileAll charges a flat fee of $378.00 plus $15.00 per tile. <BR>\n" );
document.write( "T(x) = 378 + 15x<BR>\n" );
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document.write( "KitchenPlus charges a flat fee of $550.00 plus $14.50 per tile. <BR>\n" );
document.write( "K(x) = 550 + 14.50x<BR>\n" );
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document.write( "Amanda has a 10% discount coupon at KitchenPlus. <BR>\n" );
document.write( "If Amanda purchases x tiles, what will the following expression be to model the average cost per tile at KitchenPlus.<BR>\n" );
document.write( "Total cost with the 10% discount:: 0.9(550+14.5x)<BR>\n" );
document.write( "Average cost:: [0.9(550+14.5x)/x = (495+13.5x)/x<BR>\n" );
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document.write( "How many tiles does Amanda have to order for the average cost per tile to be equal at both TileAll and KitchenPlus?<BR>\n" );
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document.write( "Solve (495+13.5x)/x = (378+15x)/x<BR>\n" );
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document.write( "495x + 13.5x^2 = 378x + 15x^2<BR>\n" );
document.write( "1.5x^2 - 117x = 0<BR>\n" );
document.write( "x(1.5x-117) = 0<BR>\n" );
document.write( "x = 78 tiles<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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