If 10 firms share the sales of the market equally, the four-firm concentration ratio is ________ percent
A) 100
B) 40
C) 10
D) 5
B
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If a polluting producer is forced to pay a pollution charge, what is the effect on the supply and demand curves for the product?
A) The quantity supplied along the firm's supply curve increases. B) The firm's demand curve shifts leftward. C) The firm's supply curve shifts rightward. D) The firm's supply curve shifts leftward. E) Both the supply curve and the demand curve shift leftward.
Which one of the following changes is consistent with a change in an economy's consumption function from C = $500 billion + 0.80Y to C = $700 billion + 0.80Y?
a. An increase in disposable income taxes. b. An increase in interest rates c. A decrease in permanent disposable income. d. An increase in wealth. e. An increase in savings.
According to the theory of adaptive expectations, if the inflation rate has been 4.2 percent for the last ten years, people will expect next year's inflation rate to be:
a. 4.2 percent. b. higher than 4.2 percent. c. lower than 4.2 percent. d. 0; that is, they will expect no inflation. e. 8.4 percent.
An increase in quantity demanded is a shift in the entire demand curve.
a. true b. false