Which of the following best describes the aggregate production function? 

Monopolistic competition is like monopoly in that

Two goods are complements when an increase in the price of one good

The “savings-investment identity” in a closed economy implies that:

Children don’t understand cause and effect until age five.

Joe’s Garage operates in a perfectly competitive market. At the point where marginal cost equals marginal revenue, ATC = $20, AVC = $15, and the price per unit is $10. In this situation,

The practice of setting prices deliberately below average variable costs in order to put a rival out of business is known as ________ pricing.

In a perfectly competitive market equilibrium,

What is the main role of commercial banks in the economy?

What is the role of the multiplier effect in Keynesian economics, and how does it amplify the impact of an initial change in autonomous spending?