Seventeen years ago, Rickety Airlines sold an $800 million bond issue to finance the purchase of new jet airliners. These bonds were issued in $1,000 denominations with an original maturity of 20 years and a coupon rate of 6.00%. (Show all calculations.) Determine the value today of one of these bonds to an investor who requires a 12.00% rate of return on these securities. Determine the value today of one of these bonds to an investor who requires a 4.00% rate of return on these securities. Determine the value today of one of these bonds to an investor who requires a 15.00% rate of return on these securities. Describe the relationship between an investors required return and valuation of a bond