(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A lake is polluted by water from a plant located on its shore. Ecologist determine that when the level of pollutant isxparts per million (ppm), there will beFfish in the lake. When there are 4,000 fish in the lake, the pollution is increasing at a rate of 1.4ppm/year. At what rate is the fish population changing at that time?

2. Relevant equations

F= [itex]\frac{32,000}{3+\sqrt{x}}[/itex]

3. The attempt at a solution

Ok so if I understand correctly, Im trying to find the change in F over the change in time (one year) or:[itex]\frac{dF}{dt}[/itex]. They give me [itex]\frac{dx}{dt}[/itex] = 1.4. But I dont know how to use that to find [itex]\frac{dF}{dt}[/itex]. Any ideas?

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# Homework Help: Related Rates / Calculating Rate of Change

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