The following accompanying table shows the relationship between the speed of a computer's CPU and its benefits and costs. Assume that all other features of the computer are the same (that is, CPU speed is the only source of variation), and only the CPU speeds listed below are available for purchase. CPU GHzTotal BenefitMarginal BenefitTotal CostMarginal Costs2.0$1,000 $900 2.5$1,400  $1003.0 $300$1,200 3.5$1,900 $1,500 4.0$2,000  $400The marginal cost of upgrading from a 2.5GHz to 3.0GHz computer is:

A. $100.
B. $300.
C. $200.
D. $400.


Answer: C

Economics

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A. it makes acquiring that good illegal. B. the cost of breaking the ban changes the trade-offs consumers face. C. it is attempting to solve the nonexcludability problem. D. All of these statements are true.

Economics

The marginal product of labor is

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Economics