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The bat population in a certain Midwestern county was 350,000 in 2012, and the observed doubling time for the population is 25 years. a.

The bat population in a certain Midwestern county was 350,000 in 2012, and the observed doubling time for the population is 25 years. a. (5 pts) Find an exponential model for the population t years after 2012. 3 b. (7 pts) Estimate how long it takes the population to reach 2 million. Round the answer to whole number.

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