Find the unknown length in the right triangle. If necessary, round to the nearest tenth. 18.5 in.
689 in.
26.2 in.
344.5 in.

Abank manager wants to encourage new customers to open accounts with principals of at least $2,500. 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! "?