Answer:

Step-by-step explanation:
This arithmetic sequence begins with 19, and for each consecutive value it subtracts 5. Therefore, the rule for this is:

Hope this helps!
Answer:
Option A
Step-by-step explanation:
Because the cosine of beta is : cos(B) = BC/AB
Step-by-step explanation:
- 3x-12>-6
- 3x-12+12>-6+12
- 3x>6
- x<6/3
- x<2