Compute the value of the following bonds assuming a 3% discount rate
a) a zero coupon bond that pays $1k in five years
b) a bond that pays $1k in five years, w/ 5 annual coupon payments of $20/ea
c) what is the coupon rate if coupon payments are $20/year? At what discount rate would the value of the bond be "at par" (e.g. be worth $1k, explain reasoning)