please show work not using excel

4. The following financial statement data pertains to Southwater, Inc., a manufacturer of women's suits (dollar amounts in millions) Total Assets Interest-Bearing Debt Average Pre-tax borrowing cost Common Equity: $154,287 S33,984 7.75% Book Value Market Value Income Tax Rate Market Equity Beta Market Premium Risk-free interest rate S21,365 S66,735 39.6% 0.77 7.45% 2.5% Required a. Calculate the company's cost of equity capital. b. Calculate the weight on debt capital that should be used to determine Northridge's weighted-average cost of capital. Calculate the weight on equity capital that should be used to determine Northridge's weighted-average cost of capital. Calculate Northridge's weighted-average cost of capital. c. d