The slope of a straight line
A) is the same at all points along that line.
B) cannot be defined.
C) changes from one point to the next on that line.
D) is always equal to zero.
A
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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 be the equilibrium outcome of this game?
A. Both Apricot and Macrosoft will develop a touch-screen t-shirt. B. Macrosoft will develop a touch-screen t-shirt, and Apricot will not. C. Apricot will develop a touch-screen t-shirt, and Macrosoft will not. D. Neither Apricot nor Macrosoft will develop a touch-screen t-shirt.
The value of the marginal product of labor equals the marginal product of labor times the:
A. price of output. B. real wage. C. nominal wage. D. quantity of labor.
Suppose that new computer software for accounting and analysis at a business has a useful life of only one year and costs $200,000 before it needs to be upgraded to a new version. The revenue generated by this software is expected to be $250,000. The expected rate of return from this new computer software is
A. 11%. B. 25%. C. 20%. D. 80%.
Suppose that domestic investment in Japan is 20.2% of GDP, and Japanese national savings is 24% of GDP. What is Japan's foreign investment as a percentage of GDP?
A) 1.19% B) 3.8% C) 27.8% D) 44.2%