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Choose the One Alternative That Best Completes the Statement or Answers

question 314

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Choose the one alternative that best completes the statement or answers the question.
-In 1990, the population of a country was estimated at 4 million. For any subsequent year the population, P(t) \mathrm { P } ( \mathrm { t } ) (in millions) , can be modeled by the equation P(t) =2405+54.99e0.0208t\mathrm { P } ( \mathrm { t } ) = \frac { 240 } { 5 + 54.99 \mathrm { e } ^ { - 0.0208 \mathrm { t } } } , where tt is the number of years since 1990 .
Estimate the year when the population will be 21 million.


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