A firm's expansion path is
a. the firm's production function.
b. a curve that makes the marginal product of the last unit of each input equal for each output.
c. a curve that shows the least-cost combination of inputs needed to produce each level of output for given input prices.
d. none of the above.

After the 2008 recession, the amount of reserves in the us banking system increased. because of federal reserve actions, required reserves increased from $44 billion to $60 billion. however, banks started holding more reserves than required. by january 2009, banks were holding $900 billion in excess reserves. the federal reserve started paying interest on the excess reserves that the banks held. what possible impact will these unused reserves have on the economy?

Predict how the price of athletic shorts would change if schools banned their use

Which of the following is a benefit of a hat? it has a sports team logo on it. it makes the wearer look cool. it is red. it costs $12.