Refer to Table 3.2, which shows some costs and benefits of having your car repaired. What is the marginal benefit of the 4th hour spent on repairs?

Refer to Goods X and Y. How would a budget line be affected if income and both prices all simultaneously doubled?

Assume that good X is on the horizontal axis and good Y is on the vertical axis in the consumer-choice diagram. PX denotes the price of good X, PY is the price of good Y, and I is the consumer's income. Unless otherwise stated, the consumer's preferences are assumed to satisfy the standard assumptions. a. It would shift out so that all quantities are doubled. b. It would shift in so that all quantities are halved. c. It would not be affected. d. The slope would be doubled.

When the U.S. decides to strengthen its border control, the labor market in California is affected. We would expect the:

A. demand for labor to decrease. B. supply of labor to increase. C. supply of labor to decrease. D. demand of labor to increase.