Consider a bond with a coupon of 7.8 percent, eight years to maturity, and a current price of $1,034.50. Suppose the yield on the bond suddenly increases by 2 percent. a. Use duration to estimate the new price of the bond. (Do not round intermediate calculations. Round your answer to 2 decimal places.) Answer is complete but not entirely correct. b. Calculate the new bond price using the usual bond pricing formula. (Do not round intermediate calculations. Round your answer to 2 decimal places.)