Remember that straight lines are 180°. For #1 angle 1 would be 40°, since 140°+40°=180°
Answer:
C
Step-by-step explanation:
Increase is difference between ending and begining value so 23-(-8) =23+8.
In this case its absolute value because it has to be positive
Answer:

Step-by-step explanation:
3--2/-6-1=
3+2/-7
5/-7