document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=164144>Question 164144</A>: <I><SPAN STYLE=\"word-break: break-all;\"> can someone help me with this problem:\r<BR>\n" );
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document.write( "The population growth of an animal species is described by F(t) = 500 + 90 log3 (2t + 1) where t is  measured in months. Find the population of this species in an area 40 month(s) after the species is introduced.\r<BR>\n" );
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document.write( "a. 860<BR>\n" );
document.write( "b. 3915<BR>\n" );
document.write( "c. 7790<BR>\n" );
document.write( "d. 440 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #120958 by </B><A HREF=/tutors/aboutme.mpl?userid=alicealc><B>alicealc(293)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=alicealc><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=120958\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> F(t) = 500 + 90 * log3(2t + 1)\r<BR>\n" );
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document.write( "for t = 40<BR>\n" );
document.write( "F(40) = 500 + 90*log3(2*40 + 1)<BR>\n" );
document.write( "= 500 + 90 * log3(80 + 1)<BR>\n" );
document.write( "= 500 + 90 * log3(81)<BR>\n" );
document.write( "= 500 + 90 * log3(3^4)<BR>\n" );
document.write( "= 500 + 90 * 4 * log3(3)<BR>\n" );
document.write( "= 500 + 90 * 4 * 1<BR>\n" );
document.write( "= 500 + 360<BR>\n" );
document.write( "= 860 (a)<BR>\n" );
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