Question

1. If a firm experiences economies of scale,

a. it moves up along the long-run average total cost curve.

b. expansion of output becomes more expensive for the firm.

c. the firm can reduce its per-unit cost by producing less.

d. the firm must shut down in the long run.

e. the firm can reduce its per-unit cost by expanding production.

2. The long-run average total- cost curve represents:

a. the maximum cost of producing any level of output when all the factors are fixed.

b. the lowest cost of producing any level of output when all the factors are variable.

c. the maximum cost of producing any level of output when all the factors are variable.

d. the lowest cost of producing any level of output when all the factors are fixed.

e. the lowest cost of producing any level of output when at least one factor fixed.

3. If the average variable cost if falling, then:

a. average fixed cost is rising.

b. marginal cost must be falling.

c. marginal cost must be rising.

d. marginal cost lies below average variable cost.

e. marginal cost lies above the average variable cost.

4. When the marginal-cost curve lies above the average-total-cost curve, the average-total-cost curve slopes up and the average-variable-cost curve slopes down.

a. true

b. false.

5. Demand is price-elastic at the top portion of a straight-line downward-sloping demand curve.

a. true

b. false.