Answer:
10.03%
Step-by-step explanation:
Using the dividend discount formula, find the cost of equity; r

whereby,
D1 = Next year's dividend = 5.29
P0 = Current price of the stock = 79.83
g = growth rate of dividends = 3.40% or 0.034 as a decimal
Next, plug in the numbers to the formula above;

As a percentage, r = 10.03%
Therefore, the company's cost of equity is 10.03%