Answer:
Cost of equity = 6.34%
Explanation:
Provided information is as follows:
Beta = 1.28
Market risk premium = 7.4%
T-Bills yield = Risk free return = 3.6%
Dividend given = $1.62
Growth rate g = 2%
Current price = $38
Using Capital Asset Pricing Model
Cost of equity = Risk free return + Beta (Market risk - Risk free return)
= 3.6% + 1.28 (7.4 - 3.6)
= 3.6% + 4.864% = 8.464%
Using dividend growth model
Current price of share = 
$38 =
Cost of equity - 0.02 =
= 4.34%
Cost of equity = 4.34 + 2 = 6.34%
But the best estimate is using dividend growth model as this is company specific while capital asset pricing model uses the industry and market rates and do not consider company performance.
Therefore, cost of equity = 6.34%