The lake initially has 7,000 trout

Carrying capacity = 80,000 trout

Growth factor(a) = 1.2

Each fish license can be sold for $13 in any year

The planning horizon is 40 years

Find the strategy with the highest revenue you can. Make sure the fish population does not become negative and that the number of fish left at the end of Year 40 is at least 40% of the carrying capacity, that is, at least 0.4*80,000. Report the solution (the number of fish to catch each year), the number of fish remaining at the end of Year 40, and the revenue.
 

C-P(t)' P(t + 1) 3D (t) +*P(t) * C