questions 2&3 please show work

Chapter 14: 2) Holdup bank has an issue of preferred stock with a 4.25 stated dividend and its selling for $92 per share. What's the cost of its preferred? 3) Molineux corp. has market value of equity at $20 billion, and its debt book value is $4 billion. Its cost of equity is 12%, and pretax cost of debt of 7%. Its tax rate is 35%. a) What's the company's capital structure? b) What's the after tax cost of debt? c) What's the company's WACC