Answer:
The formula for calculating mean is summation x/n
There fore
5
-7
3
2
-6
-4
8
-2
1
The answer is -4 which A
4
167 i believe according to my calculations
ANSWER

EXPLANATION
The given problem is

This is defined if and only if

Even the given expression can be simplified to obtain:

The exclusion is

The answer is C
The original spot for A is (2,-4)
Multiply it my the decimal form 3/4
.75*2=3/2
.75*-4=-3
Hope this helps!
Mean because the mean is an average. That gives an overall understanding of what the entire class did.