1. Consider a 10 year bond with face value $1,000, pays 6% coupon semi-annually and has a yield-to-maturity of 7%. How much would the approximate percentage change in the price of bond if interest rate in the economy decreases by 0.80% per year?
2. You purchase a bond with a coupon rate of 7.8 percent and a clean price of $855. If the next semiannual coupon payment is due in two months, what is the invoice price? (Do not round intermediate calculations and round your final answer to 2 decimal places, e.g., 32.16.)