true or false question. please explain your answers urgently

1. A well-researched valuation is timeless 2 Firms with same correlation with the market portfolio may not have the same beta 3 Historical equity risk premium should be estimated using most recent data to reflect current conditions 4 A firm with high growth rate could still destroy shareholder value. 5 Firms that do not pay dividends cannot be valued using the dividend discount model but can be valued using the residual income model 6 A company's cost of debt is the contracted rate it pays on its outstanding debt. 7 Free Cash Flow to Equity can be less than net income. 8 An increase in stock price leads to lower implied cost of equity. 9. The dividend discount model will generally undervalue stocks relative to free cash flow to equity model. 10 Once a firm reaches steady state, the profit margins grow at the rate 'g