(0.25). Open "Bond Pricing Spreadsheet". The spreadsheet shows you how to calculate invoice price for 6-year maturity bond with a coupon rate of 2.25% (paid semiannually). The market interest rate given is 7.9%. Now, please modify the spreadsheet and calculate invoice price of bond with 6.25% coupon (paid semiannually), settlement date July 31,2012, maturity date May 15, 2030, YTM 7.9%