document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1178154>Question 1178154</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Consider each given sequence start.  i) Classify each as arithmetic, geometric, and/or none of these.  ii)  Find the 28th term.  iii)  Find the sum of the first 7 terms, call it S7 . \r<BR>\n" );
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document.write( "88,83, 78, 73,   </SPAN>\n" );
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document.write( "88,83, 78, 73, \r<BR>\n" );
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document.write( "common difference between consecutive terms is -5<BR>\n" );
document.write( "first term a = 88\r<BR>\n" );
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document.write( "tn = a + (n-1)*d\r<BR>\n" );
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document.write( "t28 = 88+(87)*-5\r<BR>\n" );
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document.write( "t28 = -347\r<BR>\n" );
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document.write( "Sum of terms = Sn = n/2(2a+(n-1)d) \r<BR>\n" );
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document.write( "S7 = (7/2)(2*88+ 6*-5)\r<BR>\n" );
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document.write( "S7 =(7/2) * 146\r<BR>\n" );
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document.write( "S7 =511\r<BR>\n" );
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document.write( " </SPAN>\n" );
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