Answer:
Domain: all real numbers
Range: less than/equal to -2
Triangles add to 180° and there is already 100° shown inside of the triangle (30° plus 70° = 100°). 180° -100° = 80°, which is x. X and y are vertical angles, so y is also 80°. The answer is B.
Answer:

Step-by-step explanation:
The rate of change (slope) is 1 which is more than function 2 and less than function 1
In triangle A B C
sides A B and B C are formed an angle ABC or angle B
Answer
angle B
1/3 x 4/4 = 4/12
4/12 + 5/12 = 9/12
12/12 - 9/12 = 3/12
3/12 = 1/4