document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=44115>Question 44115</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The U.S. population in 1990 was approximately 250 million, and the average growth rate for the past 30 years gives a doubling time of 66 years. \r<BR>\n" );
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document.write( "using the formula P(in millions)=250*2^(y-1990)/66\r<BR>\n" );
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document.write( "What will the population of the United States be in 2025 if this growth rate continues?\r<BR>\n" );
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document.write( "I am so stumped on this problem! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #29107 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=29107\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> All they're asking you to do is to substitute 2025 in for y and find the population P...you'll need your calculator though...so we get<BR>\n" );
document.write( "P(in millions) = 250 * 2^[(y-1990)/66]<BR>\n" );
document.write( "P(in millions) = 250 * 2^[(2025 - 1990) / 66]<BR>\n" );
document.write( "P(in millions) = 250 * 2^[35 / 66]<BR>\n" );
document.write( "P(in millions) = 361 </SPAN>\n" );
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