Can you please help me get the result of e^k, thank you!

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter5: Exponential And Logarithmic Functions
Section5.CR: Chapter Review
Problem 18E
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Can you please help me get the result of e^k, thank you!

Biologists stocked a lake with 200 fish and estimated the carrying capacity (the maximal population for the fish of that species in that lake) to be 5,000. The number of fish tripled in the first year.
Exercise (a)
Assuming that the size of the fish population satisfies the logistic equation, find an expression for the size of
the population after t years.
Step 1
M
We know that P(t) =
1 + Ae
-kt
We have P(0) =
200
200 and carrying capacity M = 5000
5000
M - P(0)
P(0)
This means that A =
= 24
24
Step 2
5000
We have P(t) =
1 + 24e-kt
Since P(1) = 600, then 1 + 24e-k = 25/3
and so ek = 11/36
Transcribed Image Text:Biologists stocked a lake with 200 fish and estimated the carrying capacity (the maximal population for the fish of that species in that lake) to be 5,000. The number of fish tripled in the first year. Exercise (a) Assuming that the size of the fish population satisfies the logistic equation, find an expression for the size of the population after t years. Step 1 M We know that P(t) = 1 + Ae -kt We have P(0) = 200 200 and carrying capacity M = 5000 5000 M - P(0) P(0) This means that A = = 24 24 Step 2 5000 We have P(t) = 1 + 24e-kt Since P(1) = 600, then 1 + 24e-k = 25/3 and so ek = 11/36
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