The far north region of alaska has an average temperature of -22 f during the month of march. the interior region has an average temperature of -2 f during the month of march. how mnay times colder is the far north region than the interior region during march

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! "?