Basic bond valuation: Complex systems has an outstanding issue of $1,000-par-value bonds with a 13% coupon interest rate. The issue pays interest annually and has 18 years remaining to its maturity date.

a. If bonds of similar rish are currently earning a rate of 7%, how much should the complex systems bond sell for today?

b. If the required return were at 13% instead of 7% what would be the current value of complex systems bond?