On the graph above, the labeled point at which investment — planned plus unplanned — is highest is point ________

Economies of scale are created by greater efficiency of capital and by

A) longer chains of command in management. B) better wages for labor. C) smaller plant sizes. D) increased specialization of labor.

A firm's private costs

A) include only its direct costs. B) is the private profit minus the producer surplus. C) include both direct and indirect costs. D) exclude the taxes on any externalities generated.