Answer:
Mean=2.53
median=2
mode=2
range=3
Step-by-step explanation:
1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 4, 4, 4
MEAN
Add up all data values to get the sum
Count the number of values in your data set
Divide the sum by the count
38/15=2.53
MEDIAN
Arrange data values from lowest to the highest value
The median is the data value in the middle of the set
If there are 2 data values in the middle the median is the mean of those 2 values.
MODE
Mode is the value or values in the data set that occur most frequently.
RANGE 
18-15=3
 
        
             
        
        
        
Answer:
Correct choice is 
Step-by-step explanation:
1. If  then you can find the inverse
 then you can find the inverse 

2. If  then
 then 

3. Hence,

 
        
             
        
        
        
Answer:
Step-by-step explanation:
perp. 4/3
y - 4 = 4/3(x - 3)
y - 4 = 4/3x - 4
y = 4/3x
 
        
             
        
        
        
Answer:
The identity property of multiplication, also called the multiplication property of one says that a number does not change when that number is multiplied by 1. Ex. 12x1=12
 
        
                    
             
        
        
        
Answer:
b. 0.86, 0.87
Step-by-step explanation:
a. Find attached solution to a