please do #7-10

Problem 7 How much should you pay for a $2,000 bond with 10% coupon, annual payments, and five years to maturity if the interest rate is 12%? Problem 8 What happens to the price of a three-year bond with an 9% coupon when interest rates change from 9% to 6%? Problem 9 How much should you be prepared to pay for a 10-year bond with a 8% coupon, semi-annual payments, and a semi-annually compounded yield of 7.5%? Problem 10 How much should you pay for a share of stock that offers a constant growth rate of 13%, requires a 18% rate of return, and is expected to sel for $50 one year from now