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July 5, 2015

Homework Help: Calculus

Posted by Z32 on Tuesday, October 6, 2009 at 11:58pm.

The population of a region is growing exponentially. There were 40 million people in 1980 (when t=0) and 50 million people in 1990. Find an exponential model for the population (in millions of people) at any time t, in years after 1980.

P(t)=

Predicted population in the year 2000 = _______million people.

What is the doubling time?
Doubling time = _______ years.

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