Answer:
A.
Step-by-step explanation:
1. 7^2-9 = 40
3+2 = 5
40 / 5
8
Answer:a
mean = 0
-3 -2 -1
0
1
2
3
if your set is -3, -2, -1, 0, 1, 2, 3 the your mean = 0