A good measure of productivity is
A) the interest rate.
B) the inflation rate.
C) aggregate output divided by employment.
D) the growth rate of aggregate output.
C
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Firm A and Firm B are the only two producers of a new solar powered cell. Society will gain the most when both firms decide to: a. form a cartel
b. merge. c. differentiate their products. d. produce at the downward-sloping part of their respective average total cost curves.
Refer to the figure below. In response to gradually falling inflation, this economy will eventually move from its short-run equilibrium to its long-run equilibrium. Graphically, this would be seen as 
A. long-run aggregate supply shifting leftward B. Short-run aggregate supply shifting upward C. Short-run aggregate supply shifting downward D. Aggregate demand shifting leftward
Refer to Figure 11-4. The movement from A to B to C illustrates
A) diminishing returns to labor. B) an improvement in technology. C) a decline in capital per worker. D) diminishing returns to capital.
Exhibit 30-3 Costs of Eliminating:Firm A Firm B Firm C 1st ton of pollution$ 30 $ 50 $ 600 2nd ton of pollution$ 70 $ 90 $ 700 3rd ton of pollution$125 $150 $ 900 4th ton of pollution$200 $250 $1,300 Refer to Exhibit 30-3. Suppose that Firms A, B, and C are the only polluters in the state and that each emits 4 tons of pollution into the atmosphere. To cut the level of pollution the government imposes an emission tax of $300 per ton of pollution. As a result of this tax, Firm A would _________________, firm B would ____________________ and firm C would __________________.
A. not reduce any of its pollution; not reduce any of its pollution; reduce all 4 tons of its pollution B. reduce all 4 tons of its pollution; only reduce 1 ton of its pollution; not reduce any of its pollution C. reduce all 4 tons of its pollution; reduce all 4 tons of its pollution; not reduce any of its pollution D. not reduce any of its pollution; reduce 3 tons of its pollution; reduce all 4 tons of its pollution