Answer:
C
Step-by-step explanation:
The mean of a data set is described as the sum of the data values divided by the total number of data values.
So what you need to do is to put X alone so what you do is +3 on both sides so only 7x=7x is left. then do the opposite and divide 7 with 7 you get 1x thats your answer
Answer:
the answer is 10 you round up a nine it keeps going to the end