document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=856210>Question 856210</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can you please tell me how to solve this? I am doing a practice before the actual test to make sure I know all of the material and there have been a lot of these and I don't know how to do them. I had to guess on the others. \r<BR>\n" );
document.write( "\n" );
document.write( "What is the 25th term of the arithmetic sequence where a1 = 8 and a9 = 48? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #515799 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=515799\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We are given two terms and asked for a third.<BR>\n" );
document.write( "What is the 25th term of the arithmetic sequence where a1 = 8 and a9 = 48<BR>\n" );
document.write( "we need to find d the difference\r<BR>\n" );
document.write( "\n" );
document.write( "an = a1 + (n - 1)d<BR>\n" );
document.write( "A9 = 48= 8 + (8)d<BR>\n" );
document.write( "40=(8)d<BR>\n" );
document.write( "d=5<BR>\n" );
document.write( "we now have the info we need to find A25<BR>\n" );
document.write( "n=25, n-1=24, a1=8, d=5\r<BR>\n" );
document.write( "\n" );
document.write( "an = a1 + (n - 1)d<BR>\n" );
document.write( "A25 = 8 + (24)*5<BR>\n" );
document.write( "a25=128<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );