WILL MARK BRAINLIEST A bank manager wants to encourage new customers to open accounts with principals of at least $3,500. 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 $3,500 and earn at least $10 interest in 1 month!"? The principal needs to be $nothing to earn $10 in interest the first month.