Answer:
NWM
Step-by-step explanation:
99.7%
This is because the likelihood of a point being within 2 SDs of the mean is 99.7%.
Answer: Choice (3): 

Remember that negative power is the same as reciprocal if the same magnitude power but positive.
Answer:
Yes! :)
Step-by-step explanation:
-18 - 25z - 30 - 35z = -48 - 60z = 12(-4 - 5z)
-72 - 60z + 24 = -48 - 60z = 12(-4 - 5z)