Answer:
The correct answer is economics of scale. 
Explanation:
Economies of scale can be defined as the cost advantage experienced by the firms when they increase their output level. As the cost of production gets spread over a large quantity of output the average cost declines.  
These costs can be both variables as well as fixed. Economies of scale can be both internal as well as external.  
Size of business affects the economies of scale, larger the firm the more will be savings on cost.  
 
        
             
        
        
        
Answer:
Parietal, temporal
Explanation:
The parietal association area is responsible for perceiving and attending to stimuli, and the temporal association area is responsible for identifying them.
 
        
                    
             
        
        
        
Answer:
The correct answer is option D.
Explanation:
The Bureau of Labor Statistics is a unit under the US department of labor. It is tasked with collecting information on the labor market, prices, and productivity and provide statistical data on its basis.  
The unemployment rate is calculated on the basis of data collected through a monthly survey called the current population survey.
The part of the adult population which is either working or do not have a job but are actively looking for one are included in labor force. Discouraged workers or those who are unemployed but not looking for jobs actively are not included.
Unemployed homemakers are not counted as employed, they are not included in the labor force either. They are considered out of the labor force as they do not have a job and are not looking for one.  
All full time and part-time workers are counted as employed.
 
 
        
             
        
        
        
To economist, the social cost of union depends primarily on the people. People do not start their lives with fully developed theories about systems of society where unions are formed to fight for socialism. This organize monopolies to break down competition. 
        
             
        
        
        
Answer and Explanation:
A. Given that Design 1A will cost $1.7 million to build and $175,000 per year to maintain
Given that Design 1B will cost $3.6 million to build and $40,000 per year to maintain
Both designs are assumed to be permanent
To find ROR using AW based rate of return equation, we find present value of each design and equate them:
Each design is permanent so
Present value of perpetuity:
Design 1A= 1700000+175000/r
Design 1B = 3600000+40000/r
=1700000+175000/r=3600000+40000/r
135000/r=1900000
Cross multiply
r=135000/1900000
r= 0.0710
r=7.10%
B Given that ROR=7.10% and MARR is 25%
MARR>ROR
Hence we reject both designs