Answer:
![\huge\boxed{B. [1,2,3,........]}](https://tex.z-dn.net/?f=%5Chuge%5Cboxed%7BB.%20%5B1%2C2%2C3%2C........%5D%7D)
Step-by-step explanation:

Combining like terms
=> 
=> 
Dividing both sides by 4
=> 
=> 
This means that x can be any number <u>that is greater than 0.75</u>
So, The solution set = [1,2,3,........]
Given:
The figure of two triangles.
To find:
The scale factor.
Solution:
We know that,

In the given figure,


The scale factor is 2. Therefore, the correct option is B.
I was expecting a choice that said A(1,4) is in the first quadrant so 90 degrees clockwise is fourth quadrant. For perpendicularity we reverse the coordinates, negating one of them. For the fourth quadrant, it must be the y coordinate that's negative. We end up at A'(4,-1).
The answer is the second choice: create a circle with the center at the origin. The image of A' will be on the circle, 90 degrees clockwise from A.