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JacksonSolo
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Homework Statement
A lake is polluted by water from a plant located on its shore. Ecologist determine that when the level of pollutant is x parts per million (ppm), there will be F fish 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?
Homework Equations
F = [itex]\frac{32,000}{3+\sqrt{x}}[/itex]
The Attempt at a Solution
Ok so if I understand correctly, I am 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 don't know how to use that to find [itex]\frac{dF}{dt}[/itex]. Any ideas?