upton umbrellas has a cost of equity of 11.7 percent, the ytm on the company's bonds is 6.3 percent, and the tax rate is 23 percent. the company's bonds sell for 103.3 percent of par. the debt has a book value of $411,000 and total assets have a book value of $953,000. if the market-to-book ratio is 2.77 times, what is the company's wacc?