bank manager wants to encourage new customers to open accounts with principals of at least ​$3000. He decides to make a poster advertising a simple interest rate of ​4.8%. 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 ​$3000 and earn at least ​$10 interest in 1​ month!"?