Answer:
54°
Step-by-step explanation:
180° - 52° - 30° = 98°
180 - 98° - 28° = 54°
5(3 + 13)
(x-2)^2+(y+1)^2=16
-6, because you can see a pattern in which the x coordinate of each pair is reversed to the opposite value, from positive to negative.
