document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=356773>Question 356773</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 17280(1-10%)^x = 11340<BR>\n" );
document.write( "find x </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #254867 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=254867\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 17280(1-10%)^x = 11340<BR>\n" );
document.write( "find x<BR>\n" );
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document.write( "17280(0.9)^x = 11340<BR>\n" );
document.write( "0.9^x = 11340/17280 = 21/32<BR>\n" );
document.write( "x*log(0.9) = log(21/32)<BR>\n" );
document.write( "x = log(21/32)/log(0.9)<BR>\n" );
document.write( "x =~ 3.99783<BR>\n" );
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document.write( "The (1 - 10%) is sloppy.  Usually when using per cents, it's specificied to be 10% of something, not just 10%.  This is a poorly written problem, which is why it was ignored for a long time.<BR>\n" );
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