equation	formulas
Value of Preferred Stock	D / rp
Stock Price using WACC	Non-Discounted Horizon Value = EPSt+1 / (WACC growth rate) Stock Price = (Total Firm Value + Non-operating assets MV of Preferred Stock/Debt)/ total shares
Gordon Dividend Market Model	D / (Rs growth rate)
CAPM Required Rate of Return	risk-free rate + (market premium)*Beta. OR risk-free rate + (total market return risk-free rate)*beta
Sharpe Ratio	(Return risk-free rate) / standard deviation
Value of a Perpetuity	PV = PMT/I
Multiple Method	Price = EPS*Multiple company

4. How long will it take sales to triple if the interest rate is 10% per year?