document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1042339>Question 1042339</A>: <I><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. 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( "a) If Amanda purchases x tiles, What is the expression that can be used to model the average cost per tile at KitchenPlus?\r<BR>\n" );
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document.write( "b) 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 #658185 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=658185\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a) The total cost for Amanda if she buys from KitchenPlus is 0.90(550 + 14.50x).  Her average cost per tile is thus <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28+++0.90%28550+%2B+14.50x%29+%29%2Fx ALIGN=MIDDLE  ALT=\"%28+++0.90%28550+%2B+14.50x%29+%29%2Fx\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "b)  To determine how many tiles Amanda has to order for the average cost per tile to be equal at both TileAll and KitchenPlus, solve the equation \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28+0.90%28550+%2B+14.50x%29+%29%2Fx+=+%28378+%2B+15x%29%2Fx ALIGN=MIDDLE  ALT=\"%28+0.90%28550+%2B+14.50x%29+%29%2Fx+=+%28378+%2B+15x%29%2Fx\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  (Assuming <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%3C%3E0 ALIGN=MIDDLE  ALT=\"x%3C%3E0\"   DISABLED_style= \"max-width:90%; height:auto;\" >.)\r<BR>\n" );
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document.write( "===> 495 + 13.05x = 378 + 15x\r<BR>\n" );
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document.write( "===> 117 = 1.95x   ===> x = 60 tiles. </SPAN>\n" );
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