document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1039413>Question 1039413</A>: <I><SPAN STYLE=\"word-break: break-all;\"> which term of the arithmetic sequence is -18,given that a1=7 and a2=2?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #654139 by </B><A HREF=/tutors/aboutme.mpl?userid=chen.aavaz><B>chen.aavaz(62)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=chen.aavaz><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=654139\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is an arithmetic sequence with common difference d=a2-a1=2-7=-5\r<BR>\n" );
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document.write( "The nth term is: xn = a + d(n-1) where a is the first term.\r<BR>\n" );
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document.write( "Therefore: -18=7-5*(n-1), so n=6 </SPAN>\n" );
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