<span>Salary is the correct answer. </span>
        
             
        
        
        
Answer:
(2) 4%
Explanation:
The portfolio is considered to be less risky if its volatility is low. The higher standard deviation the more risky is the project. For Duke Energy and Microsoft the investment portfolio required is risk free investment. To calculate the risk free rate we calculate using the formula;
Var Rp = x1 2Var R1 + x2 2Var R2 +2 x1 x2 Corr (R1, R2) SD1 SD2 
Var Rp = 0.14 + 0.44 + 2 (1) * (-1) * 6% * 24%
Solving for this we get the risk free investment at 4%.
 
        
             
        
        
        
Price floor.
A floor, in real life, is at the bottom, below you — this then makes sense in business to say that a ‘floor’ represents the minimum value of something — in this case the price of video games.
In real life, a ceiling is above you, indicating that it could be used as a representative of a maximum value of something, like the price of a video game.
So, if we were to say that $120 was the ‘price ceiling’ for video games, then we would basically be saying that $120 is the most a video game could cost. If we were to say that $100 was the ‘price floor’ for video games, we would be saying that $100 is the minimum value that the price of a video game could assume.