She is wrong she should have added 18 to both sides
The answer is 9/v or 9 over v
<u>Answer:</u>
or 
<u>Step-by-step explanation:</u>
We are given the following function of x and we are to find the value of
:

Substituting the given value (7) in the above function to get:





or 
Answer:
The constant would be A) 9
Step-by-step explanation:
The Constant in a math expression is One number that is on its own or without a varialbe