Solve x2 - 64 = 0.
1. Isolate x2: 2 = 64
2. Apply the square root property of equality: Vx2 = 1/64
3. Isolate the variable:

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! "?