Answer:
+or-6
Step-by-step explanation:
This is a trick question. The answer would be the first choice since you're multiplying -6 by +or-6, meaning that it could still end up as a negative or a positive.
It would be 6824 because 6825 would be 6830 and 6824 is the largest number that rounds down to 6820
The mean is the average.
To find the mean, you add up all the numbers, and then divide by the number of numbers.
:P
