document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1026197>Question 1026197</A>: <I><SPAN STYLE=\"word-break: break-all;\"> write the first seven terms, the 20th term, and the sum of the first 20 terms for the arithmetic sequence where a =1 and d=2.5<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 #641649 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=641649\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a=1\r<BR>\n" );
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document.write( "d=2.5\r<BR>\n" );
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document.write( "t1=a =1\r<BR>\n" );
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document.write( "f2 = a+d =  3.5\r<BR>\n" );
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document.write( "t3 = a+2d = 4\r<BR>\n" );
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document.write( "t4 = a+3d = 5.5\r<BR>\n" );
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document.write( "t5 = a+4s = 7\r<BR>\n" );
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document.write( "t6 = a+5d = 8.5\r<BR>\n" );
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document.write( "t7 = a+6d = 10\r<BR>\n" );
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document.write( "tn = a+(n-1)d\r<BR>\n" );
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document.write( "t20 = 1+19*1.5\r<BR>\n" );
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document.write( "=28.5\r<BR>\n" );
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document.write( "Sum of n rems\r<BR>\n" );
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document.write( "sn = N/2[2a +(n-1)d]\r<BR>\n" );
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document.write( "S20 = 20/2 [2+19*1.5]\r<BR>\n" );
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document.write( "=305\r<BR>\n" );
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