The oft-heard "I-knew-it-all-along" comment that many people make illustrates the:

A constant differential between the interest rates of two countries over different terms to maturity implies that future changes in the exchange rate are expected to occur at a(n) ________ rate

A) constant B) increasing C) decreasing D) None of the above

According to the above table, the marginal factor cost of the eighth worker is

A) $27.00. B) $48.00. C) $168.00. D) $216.00.