1. An investor wants to invest a lump sum of $1,000 and have $2,000 at the end of ten years. Assuming annual compounding, what interest rate is required to reach this goal?

2a. An annuity is a stream of _____ payments either at the ______ or the _______ of a period. This is like paying rent at the beginning of each month for 12 months or paying a mortgage payment at the end of each month for 12 months.

2b. An annuity is a stream of _____ payments either at the ______ or the _______ of a period.