Answer:
center = (3, 0)
radius = 2
Step-by-step explanation:
Standard equation of a circle: 
(where (h, k) is the center of the circle and r is the radius)
Given equation:

Rewrite in standard form:

Therefore
- center = (3, 0)
- radius = 2
41 and 1/5 miles.
You can get this by multiplying the distances by number of days. Then add the two together.
All of the above is the correct answer