Answer:
B
Step-by-step explanation:

Answer:
x=12
Step-by-step explanation:
2x-4=x+8
2x-x=4+8
1x=12
12/1=12
12=x
Step-by-step explanation:
the order in which you asked the question is correct
Meaning of the rate: 6 days each month.
The answer is A. Something happens 6 days per month.
This means that in every month, there are available 6 days that let you do something.
Example in the GYm, you have 6 days per month free gym usage.