When the economy has an income tax that is variable, the multiplier is

The quantity of loanable funds supplied increases if the real interest rate rises, all other things remaining the same, because the

A) real interest rate is the opportunity cost of saving. B) real interest rate is inversely related to the cost of buying on credit. C) real interest rate is the opportunity cost of consumption. D) cost of living is determined by the real interest rate. E) demand for investment increases when the real interest rate rises.

When would a profit-maximizing monopolist that operates with no government intervention choose to produce the competitive level of output?

What will be an ideal response?