17. mary palm's checking account had a starting balance of $785.63. she wrote a check for $57.00 for groceries and a check for $125.00 for a car payment. yesterday she deposited $57.25 in her checking account. what is mary's current balance? a. $554.26 b. $660.88 c. $796.38 d. $603.63

Abank manager wants to encourage new customers to open accounts with principals of at least $2 comma 500. he decides to make a poster advertising a simple interest rate of 3%. what must the principal be if the bank manager also wants to advertise that one can earn $10 the first month? can the poster correctly say, "open an account of $2 comma 500 and earn at least $10 interest in 1 month! "?