document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=88360>Question 88360</A>: <I><SPAN STYLE=\"word-break: break-all;\"> This problem has had me stumped for 2 days now. Can I please get help?\r<BR>\n" );
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document.write( "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. The below formula for the United States then becomes:<BR>\n" );
document.write( "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<BR>\n" );
document.write( "growth rate continues? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #64182 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=64182\">put this solution on YOUR website!</A><BR><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. The below formula for the United States then becomes:<BR>\n" );
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document.write( "P (in millions) = 250 * 2^( y-1990)/66<BR>\n" );
document.write( "What will the population of the United States be in 2025 if this<BR>\n" );
document.write( "growth rate continues?<BR>\n" );
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document.write( "P = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=250+%2A+2%5E%28%282025-1990%29%2F66%29 ALIGN=MIDDLE  ALT=\"250+%2A+2%5E%28%282025-1990%29%2F66%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
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document.write( "Using a calc find <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%5E%2835%2F66%29 ALIGN=MIDDLE  ALT=\"2%5E%2835%2F66%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 1.4442325<BR>\n" );
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document.write( "P = 250 * 1.4442325<BR>\n" );
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document.write( "P = 351.0581 (in millions) </SPAN>\n" );
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