Answer:
The equation in standard form is 
Step-by-step explanation:
The distance from (-1, 12) to (-1, 8) = 4 = diameter of the circle. So, 2 = radius
The center of the circle is at (-1, 10)
The equation in standard form is 
Answer:
24
Step-by-step explanation:
you can just search it 20% of 120
100 it's like the absolute value