Population decrease of Ukraine. The population of Ukraine dropped from 51.9 million in 1995 to 44.5 million in 2013. ( Source : CIA– The World Factbook .) Assume that P ( t ) , the population, in millions, t years after 1995, is decreasing according to the exponential decay model. a. Find the value of k, and write the equation. b. Estimate the population of Ukraine in 2018. c. In what year will the population of Ukraine be 40 million, according to this model?
Population decrease of Ukraine. The population of Ukraine dropped from 51.9 million in 1995 to 44.5 million in 2013. ( Source : CIA– The World Factbook .) Assume that P ( t ) , the population, in millions, t years after 1995, is decreasing according to the exponential decay model. a. Find the value of k, and write the equation. b. Estimate the population of Ukraine in 2018. c. In what year will the population of Ukraine be 40 million, according to this model?
Solution Summary: The author calculates the value of k and the exponential function that describe the population of Ukraine after time.
Population decrease of Ukraine. The population of Ukraine dropped from 51.9 million in 1995 to 44.5 million in 2013. (Source: CIA–The World Factbook.) Assume that
P
(
t
)
, the population, in millions, t years after 1995, is decreasing according to the exponential decay model.
a. Find the value of k, and write the equation.
b. Estimate the population of Ukraine in 2018.
c. In what year will the population of Ukraine be 40 million, according to this model?
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (4th Edition)
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