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December 21, 2014

Homework Help: Calc

Posted by Liz on Thursday, July 19, 2012 at 6:21pm.

The U.S. population is approximated by the function
P(t) =
556
1 + 3.72e−0.5t
where P(t) is measured in millions of people and t is measured in 30-year intervals, with t = 0 corresponding to 1930. What is the expected population of the United States in 2020 (t = 3)? (Round your answer to the nearest whole number.)
million people

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