Answer:
b. each person evaluates the situation according to his/her individual self-interest.
Explanation:
This can be generally seen in ancient and modern form of economics where in the course of their works, they can end up countering themselves in the midst of a project.
Here, or in a case of such, a great part of economics deals and accommodates psychology an the both economics that have probably found themselves in the field are expected to evaluate the situation according to each others self interest; especially when knowing the risks, pros and negative effect of the activities that is been carried out.
Secondly, this model is a useful measurement device by which economic situations can be evaluated and also levels of competition that exist in real markets can be checked.
 
        
             
        
        
        
Answer: -$500,000,000
Explanation:
The Balance of payment is an account that shows the difference between the money coming into a country as a result of transactions with other nations and money going out for the same reason. 
Given the figures in the question, the Balance of Payments is;
= Current Account balance + Nonreserve financial account balance
= -1,000,000,000 + 500,000,000
= -$500,000,000
 
        
             
        
        
        
Explanation:
A focus group can be defined as a qualitative marketing research method where some people with common characteristics are brought together in a group who are guided by a trainer to promote discussions on a particular topic of interest and gather information to assist in decision making.
To organize focus groups for an innovative German-style fast food restaurant, you could separate 3 groups, the first being ages 18 to 30, the second 30-45 and the third group 45 and above.
The screening criteria could be, sources of income, profession, sex, taste for food, hobbies, etc.
The questions to ask could be related to the number of times a week people eat fast food, what is your favorite German food, how much are you willing to pay for the options offered in the restaurant, what elements do you consider most attractive in a restaurant ,etc.
 
        
             
        
        
        
Investment banks help companies to purchase, sell and make investments using bonds while commercial banks are concerned on managing deposits on both savings and checking account.
Investment banks aid companies on bringing their investments on public offers; commercial banks are focused on providing security for the clienteles money. 
Investment banks have some degree of freedom in choosing their own strategies while commercial banks have more risks because they are open to public transactions. 
        
             
        
        
        
Answer:
b) balance sheet
Explanation:
Balance sheet: The assets liabilities and stockholder equity are reported in the balance sheet. The accounting equation that is displayed  below is used in this: 
Total assets = Total liabilities + stockholder equity 
The balance sheet debit and credit side should always be equal and balanced.  
In addition, it is always prepared on the date specified plus it is also reflects the financial position, financial performance of the company.