document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=750798>Question 750798</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 4^2x+1 = 671\r<BR>\n" );
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document.write( "Thank you for your help! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #456784 by </B><A HREF=/tutors/aboutme.mpl?userid=timvanswearingen><B>timvanswearingen(106)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=timvanswearingen><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=timvanswearingen><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=456784\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%5E%282x%29%2B1+=+671 ALIGN=MIDDLE  ALT=\"4%5E%282x%29%2B1+=+671\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Subtract 1 from both sides:\r<BR>\n" );
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document.write( "Take log base 4 of both sides.  All you are left with on the left side is 2x. So 2x= log base 4 of 670.  Using a change of base formula, 2x= (log 670) / (log 4).  Divide both sides by 2, x is about 2.347.\r<BR>\n" );
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