The type of security that is protected against inflation are:

The aggregate supply curve shows the relation between

A) the real interest rate and the aggregate amount of output that firms supply. B) the price level and the aggregate amount of output that firms supply. C) the supply of goods by firms and the price of goods relative to the price of nonmonetary assets. D) the inflation rate and the unemployment rate.

What are the two characteristics that are essential to economic analysis of invention?

a. fixed-costs and public goods b. fixed-costs and private goods c. variable-costs and public goods d. variable-costs and private goods