document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=72214>Question 72214</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I wasn't sure how to do this one. I got -10.5, but I don't think thats the right answer. I came to my answer by following the notes I had taken in class. I'm just really unsure about this problem. Thanks for any help. :]\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%284.2%2A10%5E%287%2B2n%29%29%2F%282.1%2A10%5E%28-8%29%29=0.000002+ ALIGN=MIDDLE  ALT=\"+%284.2%2A10%5E%287%2B2n%29%29%2F%282.1%2A10%5E%28-8%29%29=0.000002+\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #51619 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=51619\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (4.2*10^(7+2n))/(2.1*10^(-8))=0.000002\r<BR>\n" );
document.write( "\n" );
document.write( " You are correct: n= -10.5<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );