Answer:
8.75 miles is 70%
Step-by-step explanation:
12.5
1.25 is 10 percent
multiply that by 7
8.75 miles
The line is called the directrix. Here we have a vertical directrix, so a parabola sideways from usual.
Geometry is best done with squared distances. The squared distance from an arbitrary point (x,y) to the vertical line x=2 is

We equate that to the squared distance of (x,y) to the focus (-2,0):



We could call that done. A more standard form might be
3/11 divided by 9/13 = 3/11 multiplied by 13/9 = 39/99=13/33