Suppose a monopoly can sell 10 units of output for $21. In order to sell 11 units of output, the price must fall to $20. What is the marginal revenue of the 11th unit?

The slope of the AE curve is .80. What is the expenditure multiplier? Everything else the same, by how much does equilibrium aggregate expenditure increase if

a. exports increase from $1.75 trillion to $2.25 trillion? b. government expenditure on goods and services decrease from $2.0 trillion to $1.8 trillion? c. investment increases from $1.2 trillion to $2.3 trillion?

When a nation exports a good, its ________ surplus increases, and when it imports a good, its ________ surplus increases

A) total; total B) consumer; consumer C) producer; producer D) producer; consumer E) total; consumer