The center of a circle is (5, -1). (5, 7) is outside the circle, and (1, -1) is inside the circle. If the radius, r, is an
integer, how many possible values are there for r? Choose the most appropriate option.
A) 3	B) 2	C) 6	D) 12	E) 1
r must be greater than 4 and smaller than 8, hence r=5,6 or 7.   Answer 6
<result>C</result>
The center of a circle is (5, -1). (5, 7) is outside the circle, and (1, -1) is inside the circle. If the radius, r, is an
integer, how many possible values are there for r?