Answer:

Step-by-step explanation:
The formula for a circle of radius r centered at (h, k) is ...
(x -h)^2 +(y -k)^2 = r^2
Both of the given points are on the line y=-1. The distance between them is the difference of their x-coordinates, 2 -(-2) = 4. So, the radius of the circle is 4 and the equation becomes ...
(x -2)^2 +(y -(-1))^2 = 4^2
(x -2)^2 +(y +1)^2 = 16 . . . . . . . . . matches choice A
Common denominators of 9 and 3 are 9. 27
Common denominators of 9 and 2 are 18 36
Answer: B -4
Step-by-step explanation: I think it is B because -4 is smaller than A,C and D.
the sequence is 4n-13, so substitute 107 into n and it will become 4(107)-13 =415