Answer:
C. Maryann should specialize in the activity for which she has a comparative advantage.
Explanation: Being able to produce goods by using fewer resources, at a lower opportunity cost is comparative advantage. Maryann should specialize in the activity where she has this.
 
        
             
        
        
        
<span>Someone may choose to own a car instead of leasing because they may end up needing to drive it farther and longer than the set milage or wanting to own the vehicle outright instead of making lease or rental payments. If you damage the vehicle, it also becomes more expensive because you do not own it entirely. Reporting damage or mile overage to the leasing company results in fees and penalities. </span>
        
                    
             
        
        
        
Answer: both internally and externally 
                       
Explanation: In simple words, financial statements refers to the group of reports and statements that are prepared by an organisation for communication its financial performance and postilion to its internal and external stakeholders. 
 It constitutes balance sheet, cash flow statement and income statement etc. 
 
 
        
             
        
        
        
Answer:
Portfolio beta = 1.1075
Explanation:
The portfolio beta is a function of the weighted average of the individual stocks betas' that form up the portfolio. To calculate the portfolio beta, we use the following formula,
Portfolio beta = wA * Beta of A + wB * Beta of B + ... + wN * Beta of N
Where,
- w represents the weight of each stock in portfolio
Portfolio beta = 0.30 * 0.95  +  0.25 * 1.12  +  0.25 * 1.13  +  0.20 * 1.30
Portfolio beta = 1.1075
 
        
             
        
        
        
Answer:
The citizen, however, does not have to pay because the police officer has a pre existing duty.
Explanation:
"Preexisting duty rule is a common-law rule of contract. It says that the rule that performance of an act by which a party is already contractually bound to perform does not constitute valid consideration for a new promise. In other words, a party's offer of a performance already required under an existing contract is an insufficient consideration for modification of the contract." 
Then, the citizen doesn't have to pay because the police officer has an existing contract, and it's considered an insufficient consideration for modification of that contract.
Reference: US Legal, Inc, 2019. “Preexisting Duty Rule Law and Legal Definition.” Preexisting Duty Rule Law and Legal Definition | USLegal, Inc., 2019