document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=511020>Question 511020</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The Wikipedia (http://en.wikipedia.org/wiki/World_population) reports that the world population is 6.8 and is projected to be 9 billion by 2040. If these figures are correct, what is the yearly population growth rate? If this growth rate were historically correct, what is the predicted population for the year 1 AD? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #342161 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><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=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=342161\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A 2.2 billion gain in 29 years would average out to 758 million people per year.\r<BR>\n" );
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document.write( "If population growth was linear, the population in 1 AD would have been (6.8*10^9) - 2010(7.58*10^7), roughly -140 billion. Does that make sense?\r<BR>\n" );
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document.write( "This is why most linear regressions do not work for predicting extremely small or extremely large x-values. </SPAN>\n" );
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