SOLUTION: suppose P(t), the population in millions of a country in a year t, is defined by the formula: P(t)=125+.2t? a) what is the initial population of the country? b) what is the

Question 471702: suppose P(t), the population in millions of a country in a year t, is defined by the formula: P(t)=125+.2t?
a) what is the initial population of the country?
b) what is the country's growth rate?
c) what is the country's expected population 5 years from now (i.e t-5)?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
suppose P(t), the population in millions of a country in a year t, is defined by the formula: P(t)= 125+.2t?
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The formula makes no sense.
It says the population is 125 million + 20% of a year.
You don't add a part of a year to a population size.
It makes no sense.
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a) what is the initial population of the country?
P(0) = 125 million
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b) what is the country's growth rate?
Ans: I think you want to say it is 20%
P(t) = 125(1.2)^t
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c) what is the country's expected population 5 years from now (i.e t-5)?
---
P(5) = 125(1.2)^5 = 311.04 million
==========================================
Cheers,
Stan H.

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