Suppose Stark Ltd. just issued a dividend of $2.15 per share on its common stock. The company paid dividends of $1.75, $1.89, $1.96, and $2.07 per share in the last four years. If the stock currently sells for $40, what is your best estimate of the company's cost of equity capital using the arithmetic average growth rate in dividends? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) Cost of equity % What if you use the geometric average growth rate? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) Cost of equity %