∠DOC is the average of the given angle values,
(170° +44°)/2 = 107°
∠DOB is the supplement to that,
180° -107° = 73°
The appropriate choice is
B) 73°
$864 all you had to do was multiply 216 by 4 and 380 by 4 to get 1520 and 656 subtract that to get 864
I would choose the answer D
x adds 1 and y subtracts by 6
X=3, y=4
x=-2, y=9
Set x equal to anything, then isolate y to get the other number.
