4-6 PLEASE HELP WITH ALL 3 THANKUUU

4. If Edna deposits $100 of cash which she found under her pillow into her checking account at First National Bank, then what happens to the M-1 money supply? (Did it increase, decrease or remain the same) 5. A bank faces a required reserve requirement of 10%. If the bank has $500 million of checkable accounts and $75 million of total reserves, then how large are the bank's excess reserves it has available to lend? 6. If the reserve requirement is 20% and there is $10,000 of excess reserves in the banking system then by how much maximum expansion can there be in M-1 money supply if the excess reserves are lent and relent in the banking system