Crost Company has FCFF of $ 1.7 billion and FCFE of $ 1.3 billion. Crosts WACC is 11 percent, and its required rate of return for equity is 13 percent. FCFF is expected to grow forever at 7 percent, and FCFE is expected to grow forever at 7.5 percent. Crost has debt outstanding of $ 15 billion. a) What is the total value of Crost's equity using the FCFF valuation approach? b) What is the total value of Crost's equity using the FCFE valuation approach