It's the first choice. If you multiply the first equation by 3, your y term is a +12, and if you multiply the second equation by 4, your y term is a -12. When you add them the y terms cancel each other out.
Answer:
3262.9 cm^3
Step-by-step explanation:
Formula =

Pi = 3.145
So,

Here you go
-5/14 (change 2/7 to 4/14 and it’ll help)
Answer:
7
Step-by-step explanation:
If there is one circle and it reflected into 1 circle it would be a rewind of a mirror