The total cost of developing and manufacturing a brand of cosmetics takes the form TC=0.05Q^3+aQ^2+110Q+b The fixed development and production costs are $7,000. Find the minimum average cost if it is known that this occurs at Q = 80. (Give your answer to the nearest dollar.)
The minimum average cost is $ ?
Here b is the fixed cost which is given b=$7000
Now to find out the average cost we need to devide the total cost by Quantity Q.
minimum average cost:
we know that it occurs at Q=80 so lets find out a:
Thus the minimum average cost will be:
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Minimum Average cost is $1070
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