please help

Assume Rf=4.7 percent and Rm=8.7 percent and an increase in interest rates changes Rf to 7.07 percent: also assume that the market premlum (RmRf) changes to 7.2 percent. Compute Kj for the following betas: (Round the final answers to 2 decimal ploces. Omit 5 sign in your response.) Please show all colculations (submit on the course Moodle page) Calculate the aftertax cost of debt under each of the following conditions, (Do not round intermediate colculotions. Round the final onswers to 2 decimal places.)