Answer:

Step-by-step explanation:
-5+2(10b-2)=31
Expand brackets.
-5+20b-4=31
-9+20b=31
Add 9 on both sides.
20b=40
Divide both sides by 20
b=2
A ray has only one endpoint and goes on forever in the other direction. A segment has two endpoints
8-x because you are seeing how tall it grew this week
Answer:
-6z
Step-by-step explanation:
(3z)2=6z
Add the negative
-6z
The answer is approximately 11.18.