Hello there!
To find the mean, we must add all of the numbers and then divide them by the amount of values you were given.
-4 + -3 + -1 + -1 + 0 + 1
Ths would really look like:
-4 - 3 - 1 - 1 + 0 + 1
This would be -8
There are a total of 6
So, we have to divide -8 by 6.
-8/6 = -3/2
So, the mean is -3/2
I hope I helped!
Let me know if you need anything else!
~ Zoe
You do 28, which is the original cost, then you take that 15% off to do that you multiply 28×.15 and you get 4.2 and subtract that from original cost and you get 23.8 then to get the cost after tax you do 23.8×.0675 and you get 1.6 then you add that to 23.8 and get 25.4 dollars
