document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=26238>Question 26238</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am very frustrated. I am working on geometric series of numbers and thought that it would be easy but, I have not done this in a while and I have to admit that I am perplexed. Here is what I must solve:\r<BR>\n" );
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document.write( "Use the geometric series of numbers 1, 2, 4, 8,...to find the following:<BR>\n" );
document.write( "a) What is r, the ratio between 2 consecutive terms?<BR>\n" );
document.write( "    (I got r=1)<BR>\n" );
document.write( "b) Using the formula for the nth term of a geometric series, what it the 24th term?\r<BR>\n" );
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document.write( "c) Using the formula for the sum of a geometric series, what is the sum of the first 10 terms?\r<BR>\n" );
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document.write( "Could you please help refresh my memory by showing me step by step how to complete this first set of problems? Thank you!!!!<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #14104 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=14104\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> r=2/1 or 4/2 or 8/4; at any rate r=2<BR>\n" );
document.write( "Formula for nth term: nth term=(1st term)(r^(n-1))<BR>\n" );
document.write( "24th term=(1)(2^(23))=8388608<BR>\n" );
document.write( "Formula for sum: Sum of n terms =(1st term)[1-r^n]/[1-r]<BR>\n" );
document.write( "Sum of 10 terms =1[1-2^10]/[1-2]<BR>\n" );
document.write( "                = -1023/(-1)=1023\r<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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