document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=634284>Question 634284</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the sum of the first 10 terms of the series defined by the formula:\r<BR>\n" );
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document.write( "a(n) = -2n + 5 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #399572 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=399572\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> First term: Plug in n = 1 and evaluate\r<BR>\n" );
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document.write( "a(n) = -2n + 5\r<BR>\n" );
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document.write( "a(1) = -2(1) + 5\r<BR>\n" );
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document.write( "a(1) = -2 + 5\r<BR>\n" );
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document.write( "a(1) = 3\r<BR>\n" );
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document.write( "So the first term is 3\r<BR>\n" );
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document.write( "Second term: Plug in n = 2 and evaluate\r<BR>\n" );
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document.write( "a(n) = -2n + 5\r<BR>\n" );
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document.write( "a(2) = -2(2) + 5\r<BR>\n" );
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document.write( "a(2) = -4 + 5\r<BR>\n" );
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document.write( "a(2) = 1\r<BR>\n" );
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document.write( "So the second term is 1\r<BR>\n" );
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document.write( "Third term: Plug in n = 3 and evaluate\r<BR>\n" );
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document.write( "a(n) = -2n + 5\r<BR>\n" );
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document.write( "a(3) = -2(3) + 5\r<BR>\n" );
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document.write( "a(3) = -6 + 5\r<BR>\n" );
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document.write( "a(3) = -1\r<BR>\n" );
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document.write( "So the third term is -1\r<BR>\n" );
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document.write( "Keep this pattern going to find the fourth, fifth, ..., eighth, ninth, and tenth terms.\r<BR>\n" );
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document.write( "Once you have all 10 terms, add them up to get the sum of the first ten terms.\r<BR>\n" );
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document.write( "I'll let you finish.\r<BR>\n" );
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document.write( "=======================================================\r<BR>\n" );
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document.write( "Alternate method:\r<BR>\n" );
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document.write( "Hint: \r<BR>\n" );
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document.write( "Sum of first ten terms = (n*(first term + tenth term))/2\r<BR>\n" );
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document.write( "where n = number of terms (which in this case, is n = 10)<BR>\n" );
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