document.write( "Question 980289: the population of a midwest town decreased from 214,000 to 211,000 in just 2 years. assuming this trend continues, what will population be after an additional 3 years?\r
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Algebra.Com's Answer #601451 by Boreal(15235)\"\" \"About 
You can put this solution on YOUR website!
P=Po{1+r}^t, with t in years\r
\n" ); document.write( "\n" ); document.write( "211000=214000(1+r)^2
\n" ); document.write( "divide by 214000, both sides
\n" ); document.write( "0.9860=(1+r)^2
\n" ); document.write( "ln of both sides
\n" ); document.write( "-0.0141=2 (ln (1+r)
\n" ); document.write( "-0.00706=ln (1+r)
\n" ); document.write( "raise both to e
\n" ); document.write( "0.9930=1+r
\n" ); document.write( "r=-0.007\r
\n" ); document.write( "\n" ); document.write( "Now P=Po(1-0.007)^5, because it will be 5 years.
\n" ); document.write( "=206,614
\n" ); document.write( "With these problems, round at the end. I wrote in the number to a few decimal places, but the calculations were done with the original unrounded answer.
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