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Answer:
The level of reduction that corresponds to the lowest average cost per pound of pollutant is pounds of pollutant per day.
The resulting average cost is $1012 per pound.
Step-by-step explanation:
We know the cost of controlling emissions where q is the reduction in emissions (in pounds of pollutant per day) and C is the daily cost to the firm (in dollars) of this reduction.
We need to identify the objective function. The objective function is the quantity that must be made as small as possible.
In this case it is the average cost, which is given by
Next, we want to minimize the function for this we need to find the derivative
Now, we set the derivative equal to zero and solve for q to find critical points. Critical points are where the slope of the function is zero or undefined.
We reject because we can have negative reduction in emissions.
We apply the Second Derivative Test,
<em>If , then f has a local minimum at
</em>
We find
We can see that , then
has a local minimum at
.
The level of reduction that corresponds to the lowest average cost per pound of pollutant is pounds of pollutant per day.
And the resulting average cost is $1012 per pound.