AC=25-8Q+Q2 what is the MinAvgCost? show how MarginalAvgCost=AverageCost?

Answer 1

AC = 25 - 8Q + Q^2
Without using calculus,
Q^2 - 8Q + 16 = AC - 25 + 16
(Q - 4)^2 = AC - 9
so the minimum average cost is 9 and occurs when Q = 4

The 2nd question doesn't make sense out of context--needs a definition of MarginalAvgCost.