document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=363369>Question 363369</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Here is question: find the sum of all multiples of 4 that are between 14 and 523. Thank for help me </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #259098 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=259098\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a1 = 16 and an = 520.  Also, an = a1 + (n-1)d = 16 + (n-1)4 = 4n + 12.<BR>\n" );
document.write( "We solve for n.  520 = 4n + 12.<BR>\n" );
document.write( "4n = 508, or n = 127.  By the formula for the sum of an arithmetic series,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=S+=+%28127%2F2%29%2A%2816+%2B+520%29=34036 ALIGN=MIDDLE  ALT=\"S+=+%28127%2F2%29%2A%2816+%2B+520%29=34036\"   DISABLED_style= \"max-width:90%; height:auto;\" >. </SPAN>\n" );
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