The population of the world in 2009 was 6.78 billion people and was growing at a rate
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The population of the world in 2009 was 6.78 billion people and was growing at a rate of 1.14% per year. Assuming that this growth rate continues, the model P(t) = 6.78(1.0114)t-2009 represents the population P (in billions of people) in year t.
(a) According to this model, when will the population of the world be 8.7 billion people?
(b) According to this model, when will the population of the world be 14 billion people?
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