In my opinion, the speaker heard the ghost.
Answer:
That depends where you’re going by train and where you’re taking the train from. It’s sort of like taking a plane to wherever you want to go. The farther you are from your destination, the more expensive it is.
The product of expressions or numbers is calculated by multiplying the expressions or numbers.
- The incorrect value in the table is

- The value that should have been written is

From the table (see attachment), the incorrect product is given as:

The above product is incorrect.
This is so because when -y is multiplied by 2x, the result is 
So, the correct expression is:

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The correct answer is A. Country chooses to produce bananas instead of wheat.
Opportunity cost is termed as value of choice. It is the important concept in economics and also the relationship which is between choice and scarcity.
A good example of opportunity cost is you can spend money and time on other things but you can not spend time reading books or the money in doing something which can help.
Opportunity takes important part in economic theory.