The center of a circle is (5, -3). (5, 7) is outside the circle, and (1, -3) is inside the circle. If the radius, r, is an
integer, how many possible values are there for r?  Select.
A) 3
B) 5
C) 11
D) 12
E) 13
r must be greater than 4 and smaller than 10, hence r=5,6,7,8 or 9.   Answer 5
<result>B</result>
The center of a circle is (5, -3). (5, 7) is outside the circle, and (1, -3) is inside the circle. If the radius, r, is an
integer, how many possible values are there for r?