Question 1
A perfectly competitive firm will be operating at its shutdown point if it operates
◦ where
P =
MC.
◦ at the minimum point on its average variable cost curve.
◦ at the minimum point on its average total cost curve.
◦ at the minimum point on its marginal cost curve.
Question 2
The short-run industry supply curve for a perfectly competitive industry is the
◦ horizontal sum of the individual firms' marginal cost curves above
AVC.
◦ vertical sum of the individual firms' marginal cost curves above
AVC.
◦ horizontal sum of the individual firms' marginal cost curves above
ATC.
◦ vertical sum of the individual firms' marginal cost curves above
ATC.