Which of the following is an exogenous variable in the Three-Sector-Model?
a. Oil prices
b. GDP price index
c. Real risk-free interest rate
d. Quantity of currency per time period
e. Real GDP
.A
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Suppose that a new drug has been approved to treat a life-threatening disease. The demand for that drug is shown on the graph below. Prior to approval of this drug, the only treatment for this condition was any one of several non-prescription, or over-the-counter, pain relievers. The demand for one brand of the several non-prescription pain relievers is also shown on the graph. 
Demand for the new drug is ________ while demand for one brand of the over-the-counter pain relievers is ________.
A. the horizontal line at $60; the line labeled B B. the line labeled B; the line labeled A C. the line labeled A; the line labeled B D. the vertical line at 100; the line labeled A.
Assume that the required reserve ratio is 10 percent. A bank has deposits of $1,000,000 and cash of $500,000 in the Fed. The bank has demand deposits equal to $1,500,000. Given this information, the bank has excess reserves of
A) $850,000. B) $350,000. C) $1,350,000. D) None of the above.
The substitution effect that occurs when interest rates change involves a change in consumption that develops from ________
A) a change in the general level of prices B) a period of increasing productivity C) a change in the level of income D) a change in the relative prices of consumption in the two periods
A market maker faces the following demand and supply for widgets. Eleven buyers are willing to buy at the following prices: $15, $14, $13, $12, $11, $10, $9, $8, $7, $6, $5 . Eleven sellers are also willing to sell at the same prices. If the market maker makes three transactions, what is his total profit?
a. $12 b. $15 c. $18 d. $21