document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1047684>Question 1047684</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The first two terms of an arithmetic sequnce are 3, 7 and the last term is 355.\r<BR>\n" );
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document.write( "a. How many terms are there?\r<BR>\n" );
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document.write( "b. What is the 40th term?\r<BR>\n" );
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document.write( "c. What is the sum of the series?\r<BR>\n" );
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document.write( "Thanks in advance for helping out! I understand the concept but am having difficulty in solving this problem.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #663218 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52794)</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=663218\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "The first two terms of an arithmetic sequence are 3, 7 and the last term is 355.\r<BR>\n" );
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document.write( "Thanks in advance for helping out! I understand the concept but am having difficulty in solving this problem. <BR>\n" );
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document.write( "First of all, the common difference is 4.\r<BR>\n" );
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document.write( "<PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">\r\n" );
document.write( "a. How many terms are there?  - How many intervals of the length of 4 are there between 3 and 355? <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28355-3%29%2F4%29 ALIGN=MIDDLE  ALT=\"%28355-3%29%2F4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=352%2F4 ALIGN=MIDDLE  ALT=\"352%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 88.\r\n" );
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document.write( "                              - How many terms are there in between including endpoints? 88+1 = 89.\r\n" );
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document.write( "b. What is the 40th term?     - It is easy, and if you understand the concept, you must answer it. \r\n" );
document.write( "                                <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%5B40%5D ALIGN=MIDDLE  ALT=\"a%5B40%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%5B1%5D+%2B+%28n-1%29%2Ad ALIGN=MIDDLE  ALT=\"a%5B1%5D+%2B+%28n-1%29%2Ad\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 3 +39*4 = calculate on your own.\r\n" );
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document.write( "c. What is the sum of the series?    <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=S%5Bn%5D ALIGN=MIDDLE  ALT=\"S%5Bn%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28a%5B1%5D%2Ba%5Bn%5D%29%2F2%29%2An ALIGN=MIDDLE  ALT=\"%28%28a%5B1%5D%2Ba%5Bn%5D%29%2F2%29%2An\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%283+%2B+355%29%2F2%29%2A89 ALIGN=MIDDLE  ALT=\"%28%283+%2B+355%29%2F2%29%2A89\"   DISABLED_style= \"max-width:90%; height:auto;\" > = calculate it on your own\r\n" );
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document.write( "There is a bunch of lessons on arithmetic progression in this site.<BR>\n" );
document.write( "The introductory level lessons are \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( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/Sequences-and-series/The-proofs-of-the-formulas-for-arithmetic-progressions.lesson>The proofs of the formulas for arithmetic progressions</A> \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/Problems-on-arithmetic-progressions.lesson>Problems on arithmetic progressions</A>  \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/Word-problems-on-arithmetic-progressions.lesson>Word problems on arithmetic progressions</A>\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=https://www.algebra.com/algebra/homework/Sequences-and-series/Solved-problems-on-arithmetic-progressions.lesson>Solved problems on arithmetic progressions</A> \r<BR>\n" );
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document.write( " </SPAN>\n" );
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