Answer:
   Role                                  Example
Explanation:
Three types of economic<em> roles</em> are <em>consumers, producers, and workers.</em>
The role of the <em>consumer</em> is to buy the goods and services. The sum of the consumptions of a good or a services constitute the demand of the product. Thus, the consumer purchases and use the products, which is a car owner does.
The role of the <em>producer </em>is to produce the good and services. The sum of the quantities produced of a good or service by the different producer of a same product constitute the supply of the product. Thus, the producer posseses the assets to make the products available, which is what a factory owner represents.
The <em>worker</em> puts the labor. The workers are an essential part of an economy too, such as the consumers and the producers,  because they make the goods or service by their own work. The auto mechanic, who works fixing cars, is an example of a person playing the role of worker.
 
        
                    
             
        
        
        
The contingency approach to management is based on the idea that there is no single best way to manage. Contingency refers to the immediate contingent circumstances. Effective organizations must tailor their planning, organizing, leading, and controlling to their particular circumstances.
 
        
             
        
        
        
Answer: $298,800
Explanation:
Cost of goods purchased = Gross merchandise cost + Transportation-in (Carriage inwards) - Purchase discount - Purchase returns 
= 304,000 + 6,700 - 3,500 - 8,400
= $298,800
 
        
             
        
        
        
Answer:
$12 billion.
Explanation:
Given: Value added during 2011= $78 billion.
            Total sales= $90 billion.
Intermediate goods are the goods used to produce final product and it is not included in the calculation of GDP, however, it is included in the value of final goods. 
Now, finding the value of intermediate goods purchased.
Intermediate goods= 
⇒ Intermediate goods= 
∴ Intermediate goods= 
Hence, value of intermediate goods purchased is $12 billion.