document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=867799>Question 867799</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Tom is painting a fence, but he's taking his time. There are 100 feet of fence to paint, but he only paints 50% of the unpainted fence each day. How many feet has he painted after 4 days.\r<BR>\n" );
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document.write( "I wanted to know how to use a formula to solve this equation (explicit formula)\r<BR>\n" );
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document.write( "Thank You </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #523245 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=523245\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> first day 1/2= 50<BR>\n" );
document.write( "second day 1/4=25<BR>\n" );
document.write( "third day 1/8=12.5<BR>\n" );
document.write( "fourth day 1/16=6.25\r<BR>\n" );
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document.write( "8/16+4/16 +2/16 +1/16=15/16<BR>\n" );
document.write( "50.00+25.00+12.50+6.25=93.75 ft after 4 days<BR>\n" );
document.write( "S=T1*(1 - r^n)/(1 - r)<BR>\n" );
document.write( "S=50*(1 - 1/2^4)/(1 - 1/2)=93.75<BR>\n" );
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