document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=777096>Question 777096</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Any number in the series 1 3 7 15 31 63 can be expressed in terms of the number proceeding it. If x is a number in the series, what must the number be?<BR>\n" );
document.write( "A. 2x +<BR>\n" );
document.write( "1<BR>\n" );
document.write( "B. 3(x-1) + 1<BR>\n" );
document.write( "C. 3x-2<BR>\n" );
document.write( "D. 4x-5 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #473916 by </B><A HREF=/tutors/aboutme.mpl?userid=KMST><B>KMST(5328)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KMST><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=KMST><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=473916\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" > is a number in the sequence shown, the <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28next%29 ALIGN=MIDDLE  ALT=\"highlight%28next%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > number is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%282x%2B1%29 ALIGN=MIDDLE  ALT=\"highlight%282x%2B1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >,<BR>\n" );
document.write( "because eacg number is 1 more than double the number before:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3=2%2A1%2B1 ALIGN=MIDDLE  ALT=\"3=2%2A1%2B1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7=2%2A3%2B1 ALIGN=MIDDLE  ALT=\"7=2%2A3%2B1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=15=2%2A7%2B1 ALIGN=MIDDLE  ALT=\"15=2%2A7%2B1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=31=2%2A15%2B1 ALIGN=MIDDLE  ALT=\"31=2%2A15%2B1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=33=2%2A31%2B1 ALIGN=MIDDLE  ALT=\"33=2%2A31%2B1\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );