Answer:
It's a ray because it has a point and one line that goes on in a direction.
Step-by-step explanation:
Yes cause he can decrease the perimeter in any way and it would change the area and idk the other 2 in the front
Answer:
That is quite simple,7 is the best choice
Answer:
x = 18
Step-by-step explanation:

Answer:
-10 pounds or 10 pounds loss
Step-by-step explanation:
you subreact 10-20 and you get -10