Consider a bond with a coupon of 6.8 percent, eight years to maturity, and a current price of $1,071.70. 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.) Price $ 935.98 b. Calculate the new bond price using the usual bond pricing formula. (Do not round intermediate calculations. Round your answer to 2 decimal places.) Price