document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1041057>Question 1041057</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find a1 if d = 4, a20 = 82, and S20 = 880. \r<BR>\n" );
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document.write( "A.) 2 <BR>\n" );
document.write( "B.) 4 <BR>\n" );
document.write( "C.) 6 <BR>\n" );
document.write( "D.) 60 \r<BR>\n" );
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document.write( "is this the right rule? <BR>\n" );
document.write( "an = a1+(n-1)d <BR>\n" );
document.write( "Sn = (n/2)(a1+an)\r<BR>\n" );
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document.write( "If so can I see a demonstration on how you solve it? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #655992 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52781)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=655992\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "On arithmetic progressions see the lesson\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/Sequences-and-series/Arithmetic-progressions.lesson>Arithmetic progressions</A>\r<BR>\n" );
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document.write( "in this site.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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