document.write( "Question 95396This question is from textbook
\n" ); document.write( ": The U.S. population in 1990 was approximately 250 million, and the average growth
\n" ); document.write( "rate for the past 30 years gives a doubling time of 66 years. The above formula for the
\n" ); document.write( "United States then becomes
\n" ); document.write( "P (in millions) = 250 * 2( y-1990)/66\r
\n" ); document.write( "\n" ); document.write( "What will the population of the United States be in 2025 if this
\n" ); document.write( "growth rate continues?\r
\n" ); document.write( "\n" ); document.write( "I put in 2025-1990/66 and I get .530
\n" ); document.write( "I am clueless on how to simplify or solve after that.
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #69420 by stanbon(75887) $\"\"$ $\"About$

You can put this solution on YOUR website!
P (year) = 250 * 2^[( year-1990)/66] in millions
\n" ); document.write( "What will the population of the United States be in 2025 if this
\n" ); document.write( "growth rate continues?
\n" ); document.write( "P(2025) = 250*2^[(2025-1990)/66] million
\n" ); document.write( "P(2025) = 250*2^(0.5303...)
\n" ); document.write( "P(2025) = 250*1.44423...
\n" ); document.write( "P(2025) = 361.0581292... million
\n" ); document.write( "==================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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