If the Fed wants to raise interest rates, then it can use its open market operations to:

A perfectly competitive firm faces a market clearing price of $150 per unit. Average total costs are at the minimum value of $120 per unit at an output rate of 70 units. Marginal cost equals $150 per unit at an output rate of 75 units

It can be concluded that the short-run profit-maximizing output rate is A) 75 units, at which the firm earns zero economic profits per unit sold. B) 75 units, at which the firm earns negative economic profits per unit sold. C) 75 units, at which the firm earns positive economic profits per unit sold. D) 70 units, because price is less than average total costs.

In the markets for factors of production in the circular-flow diagram,

a. households provide firms with labor, land, and capital. b. households provide firms with savings for investment. c. firms provide households with goods and services. d. firms provide households with revenue.