The mean and standard deviation of the scores are 75 and 9.5 respectively.
The z-score is a means to find the probability of getting a particular score. This is calculated to be:

where x is the score, μ is the mean, and σ is the standard deviation.
To be a part of the top 2.5 percent, the probability is:

The z-score for this probability, that is, P
The correct answer is 3×10^16
Answer:
y= -3x-6
Step-by-step explanation:
I believe this is correct
Answer:
p=10
Step-by-step explanation:
1.add 7 on each side to cancel -7
2.add 7 and 3 together to get ten