The supply curve of an exhaustible resource shifts up as the marginal cost of extracting the resource increases
a. True
b. False
Indicate whether the statement is true or false
True
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Lee and Cody are playing a game in which Lee has the first move at A in the decision tree shown below. Once Lee has chosen either aggression or cooperation, Cody, who can see what Lee has chosen, must choose either aggression or cooperation at B or C. Both players know the payoffs at the end of each branch. 
If Lee chooses aggression, Cody will respond with ________, and if Lee chooses cooperation, Cody will respond with ________.
A. cooperation; aggression B. aggression; cooperation C. cooperation; cooperation D. aggression; aggression
Between two indifference curves, the one on the right indicates:
A) the same level of utility as the one on the left. B) the same bundle of goods as the one on the left. C) a higher level of utility than the one on the left. D) a lower level of consumer income than the one on the left.
What is the essential characteristic of money?
A) It must be backed by some other tradable commodity. B) It must be backed by gold or silver. C) It must be accepted and used by people as a general medium of exchange. D) It must be declared by government authority.
If the percentage change in the quantity demanded of a good equals the percentage change in price, price elasticity of demand is:
a. elastic. b. inelastic. c. perfectly elastic. d. unitary elastic.