Unemployment caused by changes in technology is called ________ unemployment

One problem with changing the required reserve ratio is that

a. the policy must be kept secret from the public in order to have any effect b. the results are unpredictable c. the changes are usually not effective d. banks will often ignore the changes e. it takes too much time for these changes to affect the economy

Show, or explain, why a monopolist with positive marginal costs charges a price on the elastic range of his/her demand curve