Answer:
Explanation:
For the cost function C(x) = 22500 + 600x + x² you want to find a) the production level that will minimize the average cost, and b) the minimal average cost.
a) Average cost
The average cost is the total cost divided by the number of units produced.
Cavg = C(x)/x = 22500/x + 600 + x
This will be a minimum where its derivative is zero:
Cavg' = -22500/x² +1 = 0
x² = 22500
x = 150
The production level that minimizes average cost is x = 150 units.
b) Minimum average cost
Cavg(150) = 22500/150 +600 +150 = 900
The minimum average cost is 900 per unit.
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