Answer:
x-bar 64.5 is a statistic because it describes a sample.
Mu 63 is a parameter because it describes a population.
The symbol for mu is a Greek m
Step-by-step explanation:
Using an linear function, we have that:
- The inequality is:
![-150D + 7250 < 2000](https://tex.z-dn.net/?f=-150D%20%2B%207250%20%3C%202000)
- The warehouse will start printing more books on the 35th day, hence it won't be printing on the 30th day.
<h3>What is a linear function?</h3>
A linear function is modeled by:
![y = mx + b](https://tex.z-dn.net/?f=y%20%3D%20mx%20%2B%20b)
In which:
- m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
- b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.
In this problem:
- A warehouse contains 7250 books in it, hence b = 7250.
- Books are being shipped from the warehouse such that the number of books decreased by 150 per day, hence m = -150.
Thus, the number of books each day is modeled by the following function:
![B(D) = -150D + 7250](https://tex.z-dn.net/?f=B%28D%29%20%3D%20-150D%20%2B%207250)
It will begin to print more books when the warehouse contains less than 2000 books, hence, the inequality is:
![B(D) < 2000](https://tex.z-dn.net/?f=B%28D%29%20%3C%202000)
![-150D + 7250 < 2000](https://tex.z-dn.net/?f=-150D%20%2B%207250%20%3C%202000)
Then:
![-150D < -5250](https://tex.z-dn.net/?f=-150D%20%3C%20-5250)
![150D > 5250](https://tex.z-dn.net/?f=150D%20%3E%205250)
![D > \frac{5250}{150}](https://tex.z-dn.net/?f=D%20%3E%20%5Cfrac%7B5250%7D%7B150%7D)
![D > 35](https://tex.z-dn.net/?f=D%20%3E%2035)
The warehouse will start printing more books on the 35th day, hence it won't be printing on the 30th day.
More can be learned about linear functions at brainly.com/question/24808124
Answer:
12
Step-by-step explanation:
It is a scale. If 3=9 in this case. What times 3 equals 9?
3. So we multiply 3x4 to get 12.