84/2 = 42
42/2 = 21
21/3 = 7
7/7 = 1
84 = 2^2 * 3 * 7
Consider the attached ellipse. Let the sun be at the right focus. Then perihelion is at right vertex on the x-axis and aphelion is at the left vertex on the x-axis.
The distances:
- from perihelion to the sun in terms of ellipse is a-c;
- from aphelion to the sun in terms of ellipse is a+c.
Then

Add these two equations:
and subtract first equation from the second:
Note that
thus

The equation for the planet's orbit is

In the first 3 days, I think that Juanita will ride 12500? I'm not sure if that is right but I think it is.
Answer:
0.0049382716
PS: you could just look it up ;)
Step-by-step explanation:
If there is 4 thousands and 7 hundreds is 4,700