Please help with showing formulas and process to get to solution for part a,b and c of this question. Thanks!

If Wild Widgets, Inc., were an all-equity company, it would have a beta of .95. The company has a target debtequity ratio of .40. The expected return on the market portfolio is 11 percent, and Treasury bills currently yield 4 percent. The company has one bond issue outstanding that matures in 20 years and has a coupon rate of 6.5 percent. The bond currently sells for $1,080. The corporate tax rate is 34 percent. A. What is the companys cost of debt? B. What is the companys cost of equity? C. What is the companys weighted average cost of capital?