SOLUTION: The population of a certain species of fish has a relative growth rate of 1.2% per year. It is estimated that the population in 2000 was 10million. a. Find an

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: The population of a certain species of fish has a relative growth rate of 1.2% per year. It is estimated that the population in 2000 was 10million. a. Find an       Log On


   



Question 892642: The population of a certain species of fish has a relative growth rate of 1.2% per year. It is estimated that the population in 2000 was 10million.
a. Find an exponential model N(t)=N e^rt for the population after 2000

b. Estimate the fish population in the year 2007
c. After how year will the fish population reach 13 million

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The population of a certain species of fish has a relative growth rate of 1.2% per year. It is estimated that the population in 2000 was 10million.
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a. Find an exponential model N(t)=N e^rt for the population after 2000
N(t) = 10^6*e^(0.012t)
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b. Estimate the fish population in the year 2007
N(7) = 10^6*e^(0.012*7)
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N(7) = 1087628.9
Round up.
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c. After how many years will the fish population reach 13 million
13*10^6 = 10^6*e^(0.012t)
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e^(0.012t) = 13
0.012t = ln(13)
t = 213.7 years
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Cheers,
Stan H.