Given percentage change in supply and the price elasticity of supply, explain how percentage change in equilibrium price varies as the price elasticity of demand changes from 0 to infinity.
What will be an ideal response?
The price-change formula to predict the change in equilibrium price resulting from a change in supply is
.
Consider two extreme cases. If Ed = 0 (demand is perfectly inelastic), percentage change in equilibrium price is just the negative value of the ratio of percentage change in supply to the price elasticity of supply. If Ed = ?, percentage change in equilibrium price approaches zero.
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Refer to Figure 17-4. Consider the shift in the short-run Phillips curves shown in the above graph. This shift may be explained by
A) an increase in the expected rate of inflation from 4.0 to 5.5 percent. B) an increase in the natural rate of unemployment from 5.0 to 6.2 percent. C) either an increase in the natural rate of unemployment from 5.0 to 6.2 percent or an increase in the expected rate of inflation from 4.0 to 5.5 percent. D) None of the above is correct.
As products become more differentiated:
A. consumers are less willing to switch in response to price changes and competition becomes more intense. B. consumers are more willing to switch in response to price changes and competition becomes more intense. C. consumers are less willing to switch in response to price changes and competition becomes less intense. D. consumers are more willing to switch in response to price changes and competition becomes less intense.
One reason many people make their own Hollandaise sauce rather than buy it is that
a. they can maintain control over the quality during production b. the total cost of ingredients is the same as the price of store-bought sauce c. firms do not make high-quality Hollandaise sauce d. people place a high value on their time e. firms do not produce goods that can be made at home
In a monopolistically competitive market, there:
A. are many firms selling an identical product. B. is only one firm that sells many similar yet slightly different products. C. are many firms that have slight control over the price they charge for their product. D. are substantial barriers to entry.