I believe it is C because the Associative property states that no matter how you use your parenthesis the answer will be the same <span />
Answer:
There is a 82% probability that th esample mean annual sales per square foot is at least $384.
Step-by-step explanation:
We have a population with mean 390 and standard deviation 45.83.
Samples of size n=49 are taken.
The parameters of the sampling distribution are:

First, we have to calculate the z-score that satisfies:

This z-score, looked up in a standard normal distribution table, is z=-0.915.
Then, we can calculate the sample mean as:

There is a 82% probability that th esample mean annual sales per square foot is at least $384.
83/100 because after the decimal it represent an fraction it in hundrend place
1. yes
2.no
3.yes
4. no
5. yes
Try (7x2)+d+c
I hope this helped?
If not maybe, 14+d+c?