For each of the following cases, indicate (a) to what rate columns, and (b) to what number of periods you would refer in looking up the interest factor. 1. In a future value of 1 table: 2. In a present value of an annuity of 1 table: (Round "Rate of Interest" answers to 1 decimal place, es. 4.5% and other answers to 0 decimal places, eg 45.)