Assume an after-tax savings interest rate of 8 percent and a tax rate of 28 percent. a. Calculate the total rental cost and total buying cost. b. Based on the cost criteria, would you recommend buying or renting? Buying Renting Assume an after-tax savings interest rate of 8 percent and a tax rate of 28 percent. a. Calculate the total rental cost and total buying cost. b. Based on the cost criteria, would you recommend buying or renting? Buying Renting