curious on the formula and the answer to the follow-up question

4. The capital structure for Magellan Corporation is shown below. Currently, flotation costs are 13% of market value for a new bond issue and $3 per share for preferred stock. The dividends for common stock were $2.50 last year and have an estimated annual growth rate of 6%. Market prices are $1,020 for bonds, $20 for preferred stock, and $30 for common stock. Assume a 34% tax rate. Compute the company's WACC. Is this WACC considered reasonable given the assumptions and other relevant information? Explain