________ is the economic framework that describes an individual's optimal actions in settings where interactions with others determine her well-being

At any point below the current IS curve, there is an

A) excess demand for goods. B) excess supply of goods. C) excess demand for money. D) excess supply of money.

From the profit maximizing conditions for the Cobb-Douglas production function, we find that the optimal input demands for labor and capital may be related as L = brK/(aw). Under what conditions are the expenditures on capital and labor equal?

A) Constant returns to scale B) Increasing returns to scale C) Decreasing returns to scale D) a = b