Answer:

Step-by-step explanation:
This is the distance formula for cartesian coordinate systems, or your typical xy graph. If given two points to find the distance between, you can assign '1' or '2' to the points, i.e. (1,1) and (2,2) could be: (1,1) is (x1,y1) and (2,2) is (x2,y2). It doesn't matter which point is 1 or 2. If we were to use those example points in this formula, we would have:

We can simplify and come up with:
=
We must remember that square roots can be positive OR negative, HOWEVER, because you are looking for a distance it must be positive
.
Hope this helped!
This could be wrong because I'm going into the fifth grade but wouldn't it just be (7,-3)?
Answer:
A
Step-by-step explanation:
the answer is
x+15=28
x=28-15
x= 13
Divide 29.15/265 = 0.11 or 11 percent