Use the information provided to write the standard form equation of each circle.

Please show work.

1. Center:(-2, 9)

Radius: 8

2. Center: (-6, 9)

Radius: 10

3. Center: (15, -10)

Radius: 1

4. Center: (8, -4)

Radius:

5. Center: (10, 9)

Radius:

6. Center: (-8, 0)

Radius: 6

7. (x + 8)^2 + (y + 14)^2 = 9

Translated 3 right, 5 down

8. (x +2)^2 + (y - 8)^2 = 49

Translated 3 left, 2 up

9. (x - 4)^2 + (y - 11)^2= 25

Translated 3 right, 4 up

10. (x + 5)^2 + y^2 = 25

Translated 3 up

11. x^2 + y^2 - 16x - 30y + 280 = 0

12. x^2 + y^2 + 12x - 22y + 137 = 0