Use the figure below to answer the following question.
If a price ceiling in this market is set at P1, then consumer surplus equals area
A. a + b + d.
B. b.
C. a.
D. a + b.
Answer: D
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Foreign exchange rates are
A. price at which purchases and sales of foreign goods take place. B. movement of goods and services from one country to another. C. the price of one currency in terms of a second currency. D. differences between exports and imports.
Imagine that you are a member of the Board of Governors of the Federal Reserve. If the economy is experiencing rapid inflation, what actions might you advocate? Why?
Refer to the above figure. All of the following are true concerning the diamond-water paradox EXCEPT
A. marginal utility of diamond consumption is relatively high. B. since the price of diamonds is high, demand is great. C. the demand for water exceeds the demand for diamonds. D. the price of diamonds exceeds the price of water.
Refer to the information provided in Figure 10.3 below to answer the question(s) that follow. 
Figure 10.3 Refer to Figure 10.3. If labor supply is given by S1 and the firm is using K1 units of capital, this firm should hire ________ units of labor to maximize profit.
A. I0 B. I1 C. I2 D. I3