Question 1173084
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Hi, 
 P = 0.68x^2 - 0.047x + 3  
 approximate population P, in thousands
27,198 fish , P = ~27
27 = 0.68x^2 - 0.047x + 3 
0.68x^2 - 0.047x - 24 = 0
Solving
x = 5.975   (tossing out negative solution)
Towards to end of the 5th year, the population will reach 27,198 fish
5 years after 1997 = 2002