document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1029820>Question 1029820</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The function f(x) = 34.1 lnx +117.7 models the number of U.S. users, f(x), in millions, x years after 1999.  By which year will there will be 250 million internet users in the United States? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #647146 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=647146\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The function f(x) = 34.1 lnx +117.7 models the number of U.S. users, f(x), in millions, x years after 1999. By which year will there will be 250 million internet users in the United States? <BR>\n" );
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document.write( "34.1*ln(x) + 117.7 = 250<BR>\n" );
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document.write( "34.1*ln(x) = 132.3<BR>\n" );
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document.write( "ln(x) = 3.88<BR>\n" );
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document.write( "x = e^3.88 = 48.42 <BR>\n" );
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document.write( "Ans:  1999+ 48.42 = in the year 2048<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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