A manufacturing firm has a total cost curve: TC = 0.2Q3 - 5Q2 + 50Q + 240,  and a marginal cost curve of MC = 0.6Q2 - 10Q + 50. Calculate the minimum cost that the firm can possibly have. a.420 ≤ MC < 440 b.MC < 380 c.400 ≤ MC < 420 d.380 ≤ MC < 400 e.MC ≥ 440

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Chapter1: Making Economics Decisions
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A manufacturing firm has a total cost curve: TC = 0.2Q3 - 5Q2 + 50Q + 240, 
and a marginal cost curve of MC = 0.6Q2 - 10Q + 50.
Calculate the minimum cost that the firm can possibly have.
a.420 ≤ MC < 440
b.MC < 380
c.400 ≤ MC < 420
d.380 ≤ MC < 400
e.MC ≥ 440
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