Please show work, cheers :)

QUESTION 1: Suppose Ladoga Ltd. just issued a dividend of $2.08 per share on its common stock. The company paid dividends of $1.71, $1.82, $1.93, and $1.99 per share in the last four years. If the stock currently sells for $45, what is your best estimate of the company's cost of equity capital a) using the arithmetic average growth rate in dividends b) using the geometric average growth rate Year 1 $1.71 Year 2 $1.82 Year 3 $1.93 Year 4 $1.99 Year 5 $2.08