<span>the real exchange rate is greater than one and arbitrageurs could profit by buying oranges in Morocco and selling them in the U.S.</span>
        
             
        
        
        
Answer:
C. optimal capital labor ratio remains the same
Explanation:
One pilot for each plane implies A = B
Let cost be C
So, isocost line is xA + rB = C
So, xA + yA = C (as L = K)
So, (x+y)A = C
So, A = C/(x+y) =B
Optimal capital labor ratio = B/A = 1 as B =A
Now, wage rate increases to x'
So, isocost line is x'A + yB = C
So, x'A + yA = C (as A = B)
So, (x'+y)A = C
So, A = C/(x'+y) = B
New optimal capital labor ratio =B/A = 1 as B = A
Thus, optimal capital labor ratio remains same because capital (planes) and labor (pilots) are used in fixed proportion.
Thus the answer is 
C. optimal capital labor ratio remains the same
 
        
             
        
        
        
<span>FALSE. The trainer should write notes as Bullet points to ensure nothing is skipped and he/she stays on task. Star the most important bullet points to be sure each trainee understands what is being taught. Notes could also include hand out sheets to give to trainees.</span>
        
             
        
        
        
The market mechanism benefits society by ensuring that: <span>scarce resources are channeled into products most desired by society
Market mechanism determines which products stays or go by relying purely on the force of supply and demand. If the products are desired by the customers, the producer will always keep up with the demand in order to rake in the potential profit.</span>
        
                    
             
        
        
        
Answer:
B) in the short run, an unexpected change in the price of an important resource can change the cost to firms.
Explanation:
The short run aggregate supply (SRAS) curve is upward sloping because as the price of goods and services increases, the quantity supplied will increase. In the short run, wages are more sticky than prices, and businesses can adjust prices more rapidly than employees can get a raise. This will result in businesses increasing their profit margins as the general level of prices increases, therefore the SRAS curve will be upward sloping. 
An unexpected change in the price of a key input will shift the entire SRAS curve either to the right (price of key input decreases) or to the left (price of key input increases).