document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=926648>Question 926648</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hey everyone i need help with this question i don't know where to even begin.If you guys can please explain it to me in steps that would be great, thank you\r<BR>\n" );
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document.write( "The population of a city is modeled with the function P(x)=45,000(1.035)^x of years since 2010.\r<BR>\n" );
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document.write( "Use the rule of 70 to estimate the doubling time for the population of this city.\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #562374 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=562374\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The population of a city is modeled with the function P(x)=45,000(1.035)^x of years since 2010.<BR>\n" );
document.write( " Use the rule of 70 to estimate the doubling time for the population of this city.<BR>\n" );
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document.write( "2*45000 = 45000(1.035)^x<BR>\n" );
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document.write( "2 = 1.035^x<BR>\n" );
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document.write( "x*log(1.035) = log(2)<BR>\n" );
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document.write( "x = 20.15 years<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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