Answer:
Before the listing agreement is signed.
Explanation:
A listing agreement is a contract between a property owner and a real estate broker asking the real estate broker to get a buyer for his or her property. The property owner implements the listing agreement so as to empower the real estate broker to act in the capacity of the agent to the owner in the course of trying to sell the property. Generally certain commission is paid to the real estate broker by the property owner.
Answer:
represents the TOTAL revenue at time 
.
Explanation:
is the revenue at the time at the first restaurant.
is the revenue at the time at the second restaurant.
If we want to know the TOTAL revenue at the time , we would sum these quantities:
TOTAL revenue = 
So represents the TOTAL revenue at time .
Answer:
Cultural formula
Explanation:
Cultural formula can be described as a situation there is tend to a consistent occurrence of certain roles and props in a series of media events.
Cultural formula can be employed in a novel through the use of certain roles for characters and props that go along with the genre.
Therefore, Chandler's novels followed a cultural formula.
