document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=907071>Question 907071</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Urgent please help!<BR>\n" );
document.write( "What is the depth of the photic zone of this lake? SOLVE for x\r<BR>\n" );
document.write( "\n" );
document.write( "l/l_0 = 0.01 so,<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+0.01+=+e%5E%28-0.025%28x%29%29 ALIGN=MIDDLE  ALT=\"+0.01+=+e%5E%28-0.025%28x%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > please round the answer to one decimal place.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #550151 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=550151\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> l/l_0 = 0.01 so,<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+0.01+=+e%5E%28-0.025%28x%29%29 ALIGN=MIDDLE  ALT=\"+0.01+=+e%5E%28-0.025%28x%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+0.01+=+e%5E%28-0.025%28x%29%29 ALIGN=MIDDLE  ALT=\"+0.01+=+e%5E%28-0.025%28x%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Get the log of both sides<BR>\n" );
document.write( "ln(0.01) = -0.025x<BR>\n" );
document.write( "x = -ln(0.01)/0.025<BR>\n" );
document.write( "x =~ 184.2 feet </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );