Show that the discounted value A of a decreasing annuity whose n payments at the end of each year are nR, (n 1)R, (n 2)R,...., 2R, R is:

Assume that A = 3955$, R = 300$ and n = 5. Use linear interpolation to determine the interest rate i, rounded to two decimals, between 5% and 6%. Show if the price A of this annuity at your estimated interest rate is within a range of 10$ of 3955$.

A = *(n a(n)i) A = *(n a(n)i)