About 3. 3x4= 12, but the number of concert tickets doubles, so after about 3-4 it should be 1/4 tickets sold.
<u>Given</u>:
The given expression is 
We need to determine the factor of the given expression.
<u>Factor</u>:
Let us rewrite the given expression.
Thus, we have;

Since, the above expression is of the form
, let us apply the identity 
Thus, we have;
------ (1)
Now, we shall factor the term 


Substituting the above expression in equation (1), we have;

Therefore, the factor of the given expression is 
Hence, Option B is the correct answer.
Answer:
I think it's answer D. (141). :D
Step-by-step explanation:
The surface of the water is 0 feet. So 10 feet down means it is 0 - 10, or -10 feet as its final position.