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A hatchery stocks a pond with 1000 fish. The number of fish t years later is given by P(t)=1000e^(-0.2t). At approximately what time are there

A hatchery stocks a pond with 1000 fish. The number of fish t years later is given by P(t)=1000e^(-0.2t). At approximately what time are there 100 fish left?




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