SOLUTION: The population of a southern city follows the exponential law. If the population doubled in size over 21 months and the current population is 30,000, what will the population b
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Question 1171100: The population of a southern city follows the exponential law. If the population doubled in size over 21 months and the current population is 30,000, what will the population be 5 years from now? Found 2 solutions by ikleyn, Boreal:Answer by ikleyn(52778) (Show Source):
P(t) = 30000*2^((5*12)/21) = 217374. ANSWER
In the formula, "5" denotes the number of years; "12" denotes the number of months in the year,
and the fraction is the number of doubling periods.
Solved.
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To see many other similar solved problems and to learn the theory, look into the lesson
- Population growth problems
in this site.
You can put this solution on YOUR website! 60 months/21 months/doubling is 2 6/7 doublings.
2^2(6/7)=2^20/7 doublings=7.2458
without rounding, multiply by 30000=217,374 to nearest person.
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