What will happen to the money supply under the following circumstances in the banking system?
a. When the required reserve ratio is 25% and a depositor withdraws $700 from his checkable bank deposit, the money supply will potentially (increase, decrease) ________ by $ ________.
b. When the required reserve ratio is 5% and a depositor adds $700 to his checkable bank deposit, the money supply will potentially (increase, decrease) ________ by $ ________.