The construction of the economy's marginal social benefit curve for a public good reflects the fact that
A) all the individuals can consume the same unit of the good.
B) more than one supplier can provide the good.
C) the same unit of the good cannot be simultaneously shared by more than one person at a time.
D) the government can supply a public good at a lower cost than can a private supplier.
A
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What is the present value of $20,000 that will be paid to you in four years if the interest rate is 10%? Work it out to the nearest cent.
What will be an ideal response?
Ginger and Maryann are lost in the jungle, where the only things to eat are mangoes and fish. Ginger can gather more mangoes per hour than Maryann and can also catch more fish per hour than can Maryann. Therefore:
A. there are no gains to specialization and trade for Maryann. B. Maryann should specialize in the activity for which she has a comparative advantage. C. Ginger should specialize in the activity for which she has an absolute advantage. D. there are no gains to specialization and trade for Ginger.
According to Keynes, the most important determinant of the level of investment was the ______________.
Fill in the blank(s) with the appropriate word(s).
A grocery store hires cashiers and baggers. Cashiers earn $8 an hour; baggers earn $4 an hour. The manager, who wants to maximize the number of customers served given a fixed payroll, expects the following productivity from cashiers and baggers: 
Given the above information, with a payroll of $32 (per hour), how should the manager allocate this budget?
A. Hire three cashiers and two baggers B. Hire four cashiers and one bagger C. Hire two cashiers and four baggers D. Hire two cashiers and three baggers