Answer:

Step-by-step explanation:
1. Combine like terms
2y-7y = -5y
-5y=5
2. Divide by -5 and the answer is 
Answer:
the dots represent how many people have 3 email accounts. In this case 5.
Step-by-step explanation:
It is the 3rd one. There are exactly 5 students with 3 email accounts.
Let me know if it was helpful.
Cost of goods sold (COGS)
I’m not entirely sure, but I believe this is the answer.