When gross investment is positive, net investment ________.
A. must be positive
B. is always zero
C. may be either positive or negative
D. must be negative
Answer: C
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Suppose two companies, Macrosoft and Apricot, and considering whether to develop a new product, a touch-screen t-shirt. The payoffs to each of developing a touch-screen t-shirt depend upon the actions of the other, as shown in the payoff matrix below (the payoffs are given in millions of dollars). 
Suppose Apricot makes its decision first, and then Macrosoft makes its decision after seeing Apricot's choice. What will happen if, before Apricot chooses, Macrosoft announces that it is going to develop a touch-screen t-shirt no matter what Apricot does?
A. Neither Apricot nor Macrosoft will develop a touch-screen t-shirt because they will both realize that they are in a no-win situation. B. Apricot will develop a touch-screen t-shirt, and Macrosoft will not because Macrosoft's threat is not credible. C. Macrosoft will develop a touch-screen t-shirt, and Apricot will not because it's not in Apricot's interest to develop a touch-screen t-shirt if Macrosoft also develops one. D. Both Apricot and Macrosoft will develop a touch-screen t-shirt because neither company will want to back down.
Janice earns an income of $2,000 a week and goes out to lunch 4 times a week. If her income increased to $2,100 she would go out to lunch 5 times a week. Compute Janice's income elasticity of demand
A) 0.22 B) 4.56 C) 2.28 D) -0.22
Of the following choices, which is the best example of a nation's economic infrastructure?
a. Natural resources. b. Highway system. c. Government. d. Religious and cultural beliefs. e. Population growth rate.
Which of the following statements is valid when the market supply curve is vertical?
a. Market quantity supplied does not change when the price changes. b. Supply is perfectly elastic. c. An increase in market demand will increase the equilibrium quantity. d. An increase in market demand will not increase the equilibrium price.