Valuation of a declining growth stock Martell Mining Company's ore reserves are being depleted, so its sales are falling. Also, because its pit is getting deeper each year, its costs are rising. As a result, the company's earnings and dividends are declining at the constant rate of 8% per year. If D0 = $4 and rs = 13%, what is the value of Martell Mining's stock? Round your answer to two decimal places.