document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=526267>Question 526267</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A building is 6 stories tall with windows on all 4 sides. Each floor has 24 windows. Each spring, all the windows are washed. The cost for washing the windows is $1.00 for each 1st floor window, $1.50 for each 2nd floor window, $2.00 for each 3rd floor window and so on. How much would it cost to wash the windows in the building if it were 20 stories tall? What if it were n stories tall? \r<BR>\n" );
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document.write( "I understand how to find the cost for 20 stories, but not n stories. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #348409 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=348409\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the cost for a window is ___ .50 + .50f , where f is the floor\r<BR>\n" );
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document.write( "the average cost per window for n stories (floors) is ___ [(1st floor) + (nth floor)] / 2\r<BR>\n" );
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document.write( "the total cost for n stories is 24n times the average ___ 24n[1 + (.50 + .50n)] / 2\r<BR>\n" );
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document.write( "12n(1.50 + .50n) ___ 18n + 6n^2 </SPAN>\n" );
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