Answer:
Mean
Step-by-step explanation:
Given

Required
Best measure of center
The mean is considered the best measure of center when there are no outliers in the given data.
Outlier is when a particular data set is far away from other datasets.
For instance: 20 is an outlier in the following data sets: 
Also, the given data are not open-ended.
An open-ended data is as follows: 
Since we do not have any of the above conditions, then the mean is the best center to use.
Answer:
The numbers are 44 and 46
Step-by-step explanation:
Let
x, x+2 ----> the two consecutive positive even integers
we know that

Solve the quadratic equation using a graphing calculator
The solution is x=44
see the attached figure

therefore
The numbers are 44 and 46
Answer: The cost of 1 bottle of juice is $0.33 or 33 cents.
Step-by-step explanation: Divide the total cost by the amount of bottles of juice to find how much each bottle costs.
= 0.33
Answer:
a = 8/3
Step-by-step explanation:
3a - 1 would equal 7
3a = 7 + 1
3a = 8
a = 8/3