Answer:
$50
Explanation:
Opportunity cost is the cost of the next best option forgone when one alternative is chosen over other alternatives. 
If I decide to go to the game, I forgot the opportunity of selling the ticket for $50 which is the next best use of the ticket.
I hope my answer helps you 
 
        
             
        
        
        
Answer:
Attached image is the plotted and labeled graph.
Explanation:
- Bundle values are:
A.  (9,1)
B.  (3,7)
C.  (4,0)
D.  (8,8)
E.  (6,5)
- Count over on the x-axis then count up on the y-axis.
- Start marking the values of y-axis above the x-axis on the graph.
 
        
             
        
        
        
Answer:
AD shifts left and price level would decrease.
Explanation:
If consumer wealth decreases due to a plunge in the stock market, the AD curve will shift to the left. This is because shifts to the left of the AD curve represent a reduction in demand, and if consumers are poorer, they will naturally decrease their demand.
This will in turn reduce the price level, because in a market system, prices will fall until they meet the new, lower demand, meaning that a new equilibrium price is reached.
 
        
             
        
        
        
B. is knowledgeable about every culture is the most probable answer
        
             
        
        
        
It is a period of time that the loaning company gives you before you have to start repaying the debt.
For instance: After graduating from college, you must start the payments to pay back your loan  3 months after graduation.