An employee gains $500 from shirking. Thus, to deter shirking, the employer makes employees post a bond equal to $1,000, and installs monitoring devices to detect shirking. What is the probability that these devices can detect shirking?

Refer to Table 1-5. What is Julius's marginal cost if he decides to stay open for three hours instead of two hours?

A) $0 B) $18 C) $54 D) $65

Refer to the diagram, in which solid arrows reflect real flows; broken arrows are monetary flows. Flow (8) might represent:

A.  personal income taxes.
B.  automobile purchases by the state of Maine.
C.  the services of firefighters.
D.  subsidies to farmers.