Given:

We know the identity

So we can equate 
when 
Tan is positive in first and third quadrant
So we will get one move value for x
when 
So for 
and 
Divide by 2 on both sides
and 
To get general solution we add 
So option A and option C are correct.
It is given that John wants to find the center of a wall so he can hang a picture. So, John measures the wall and <u>determines</u> it is 65.25 inches wide. Since John has determined that the wall measures a particular amount that means that John has <u>quantified</u> the width of the wall, which in this case comes out to be 65.25 inches.
Again, this is a single number. This means that the width of the wall is a <u>discrete</u> quantity.
Thus, 65.25 inches or 65.25" is a Quantitative and Discrete type of data. Thus, out of the given options, the first option is the correct one.
Answer:
The answer is y = 8x - 25