Break down on how to arrive at the solutions for questions 8,9&10

QUESTION 8 To help finance a major expansion, a company sold a noncallable bond that has 15 years to maturity. This bond has a 5.25% annual coupon, paid semiannually, it sells at a price of $935, and it has a par value of $1,000. If the company's tax rate is 10%, what is the after-tax component cost of debt that is used in the WACC calculation? 8.93% 9.41% 5.91% 5.32% QUESTION 9 If D1 = $1.50, g (which is constant) = 8.5%, and Po = $55, what is the stock's expected total return for the coming year? 2.73% 8.50% 11.23% 12.18% QUESTION 10 SL Energy just paid a dividend of Do = $1.00. Analysts expect the company's dividend to grow by 30% this year, by 10% in Year 2, and at a constant rate of 5% in Year 3 and thereafter. The required return on SL Energy's stock is 9%. What is the best estimate of the stock's current intrinsic value? $85.29 $29.37 $55.28 $33.99