document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=944648>Question 944648</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please help solve these two problems:<BR>\n" );
document.write( "sequence 4,8,16,32,64,128…<BR>\n" );
document.write( "d=2<BR>\n" );
document.write( "a sub 1=4<BR>\n" );
document.write( "prob #1: a(3)  what is a?  is that the same as a sub exponent 1 which is 4?<BR>\n" );
document.write( "prob #2: a(1)+a(7)\r<BR>\n" );
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document.write( "Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #575972 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=575972\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> please help solve these two problems:<BR>\n" );
document.write( " sequence 4,8,16,32,64,128…<BR>\n" );
document.write( " Note:: This is a Geometric Sequence<BR>\n" );
document.write( " r = 8/4 = 2<BR>\n" );
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document.write( "a(1) = 4<BR>\n" );
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document.write( " prob #1: a(3) what is a?<BR>\n" );
document.write( "a(3) = a*r^2 = 4*2^2 = 16<BR>\n" );
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document.write( " prob #2: a(1)+a(7) = 4 + 4*r^6 = 4 + 4*2^6 = 4+4*64 = 4+256 = 260<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );