When studying individuals' economic behavior, economists assume that
A) individuals understand the rationale for all their actions.
B) individuals act as if they were rational.
C) only educated people act as if they were rational.
D) self-interest is of limited relevance in predicting an individual's actions.
B
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Assuming all else equal, a rise in the rate of interest:
A) results in a fall in the cost of borrowing. B) results in a fall in the amount of interest accumulated on a loan. C) results in a fall in the quantity of credit demanded. D) results in an increase in the number of potential debtors.
Refer to Table 17-5. Oil Can Harry's, a new automobile service shop, is ready to start hiring. The table above shows the relationship between the number of mechanics the firm hires and the quantity of oil changes it produces
a. Suppose the price of an oil change is $20. Complete the table by filling in the values for marginal product and marginal revenue product. b. Oil Can Harry's is an input price-taker. Suppose the wage paid to mechanics is $80 per day. What is the profit-maximizing number of mechanics? c. Suppose the wage rate rises to $100 per day. (i) What happens to the firm's demand curve for mechanics? (ii) What happens to the profit-maximizing quantity of mechanics? d. Suppose the wage rate is $60 per day and the price of an oil change is now $15. (i) What happens to the firm's demand curve for mechanics? (ii) What happens to the profit-maximizing quantity of mechanics?