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It is estimated that the population P of a certain country is given by the function P(t) = 4,000,000(1.02)^t where t is the number of years after 1989. If this trend continues, what will the population be 20 years after 1989?

User Han Parlak
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Given the following function


P(t)=4,000,000(1.02)^t

Since t is the number of years after 1989, the population 20 years after 1989 is the same as t = 20. To find the value of the population 20 years from 1989, we just need to evaluate t = 20 on our given function. To evaluate a given value in our function, we just need to substitute our variable for our value.


P(20)=4,000,000(1.02)^(20)=5,943,789.58391

The population 20 years after 1989 will be 5,943,789.

User Tzinie
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