If the marginal benefit of consuming another unit of a good is positive, then to reach the allocatively efficient level of output more of the good should be produced and consumed
A) no matter what.
B) as long as the consumer can afford to pay for it.
C) if the total benefit of the good is greater than its total cost.
D) if the marginal benefit of the good is greater than its marginal cost.
D
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If the price of chewing gum is represented by P in equation P = 25 - 0.5 QD, then the corresponding quantity of chewing gum demanded is represented by the demand equation
A) QD = 2P - 0.5. B) QD = 0.5P + 25. C) QD = -5 + 10P. D) QD = 50 -2P.
If the CPI rises from 206.7 to 212.7 between two consecutive years, by how much has the cost of living changed between these two years?
A) The cost of living has increased by 6%. B) The cost of living has increased by 12.7%. C) The cost of living has decreased by 6%. D) The cost of living has increased by 2.9%.