a. number and closeness of available substitutes, importance in consumers’ budgets, and
length of the time period.
b. number of markets, size of buyers’ incomes, and empirical validity.
c. number of firms, number of variables that must be held constant, and degree to which
markets are separable.
d. scope and method of measurement and calculation and transitivity of preferences.
e. state of technology, size of the firm’s plants, and size of the absolute change in input
prices and quantity.
A natural monopoly is a likely result whenever
a. the market demand curve is downward sloping to the right.
b. the market demand curve is horizontal.
c. a firm is granted a patent on a new product or process.
d. long-run marginal costs increase as output rises.
e. there are significant economies of scale.
During periods of high inflation, investors tend to buy real estate, art, and commodities