document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=890020>Question 890020</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Nancy Bondy's aunt has promised to deposit $1 in her account on the first day of her birthday month, $2 on the second day, $3 on the third day, and so on for 30 days. How much will this amount to over the entire month. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #538636 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=538636\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is an arithmetic sequence\r<BR>\n" );
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document.write( "So use the arithmetic series formula\r<BR>\n" );
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document.write( "S = n*(a1+an)/2\r<BR>\n" );
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document.write( "S = 30*(1+30)/2\r<BR>\n" );
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document.write( "S = 15*31\r<BR>\n" );
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document.write( "S = 465\r<BR>\n" );
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document.write( "There will be $465 in the account when the last deposit (the 30th deposit) is made. </SPAN>\n" );
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