Answer:
Total number of tickets sold on Monday, Tuesday and Wednesday combined is 63.
Explanation:
We are given the following information:
Let x be the number of tickets sold.
Tickets sold on Monday = 35
Tickets sold on Tuesday =

Tickets sold on Wednesday = 14
The sum of tickets sold can be represented with the help of expression:

The expression is clearly linear in nature. Hence, the sum of the tickets is linear in nature
Total number of tickets sold on Monday, Tuesday and Wednesday combined is 63.