Changes in short-run total costs result from changes in

The situation pictured in Figure 6.2

A) is one of increasing marginal returns to labor. B) is one of increasing marginal returns to capital. C) is consistent with diminishing marginal product. D) contradicts the law of diminishing marginal product. E) shows decreasing returns to scale.

If the fraction of the population that is below the official poverty level has decreased, then

a. the number of poor must have increased b. the number of poor must have decreased c. the population must have increased d. the number of poor may have increased or decreased e. the number of people above the official poverty level must have increased