please show all work and use excel or any graphs if necessary

3. A public company has the following balance sheet ($000's) Cash $540 Accounts Receivable $4,580 Inventories $7,400 Long Term Debt $12,590 Net Fixed Assets $18.955 Common Equity $18.885 Total Assets $31,475 Total debt & Equity $31.475 At present, the firm's common stock is selling for a price equal to its book value, and the form's bonds are selling at par. The market requires a 15% return on the common stock, the firm's bond's command a yield to maturity of 8% and firm faces a tax rate of 34%. What is the firm's weighted average cost of capital