The level of output at which marginal revenue equals zero is also the level of output at which
a. total revenue is zero

A benevolent social planner would prefer that the output of good x be decreased from its current level if, at the current level of output of good x,

a. social value = private value = private cost < social cost. b. private cost < social cost = private value = social value. c. social cost = private cost = private value < social value. d. social cost = private cost = private value = social value.

Refer to the information provided in Table 23.9 below to answer the question(s) that follow. Table 23.9Refer to Table 23.9. Planned investment equals actual investment at

A. all income levels above $300 billion. B. all income levels below $300 billion. C. $500 billion. D. all income levels.