The answer is $13.43.
you can use a calculator
        
             
        
        
        
Answer:
tell me the question
Step-by-step explanation:
l am ready for you 
 
        
             
        
        
        
5 is to 7 as is to 49 is to 51
        
             
        
        
        
Answer:
17
Step-by-step explanation:
-(-17)= 17
 
        
             
        
        
        
Answer:
a) only extreme values are used in its calculation.
Step-by-step explanation:
In a data set, the range is given by the subtraction of it's highest value by it's lowest value. 
The disadvantage is that it gives a high weight to extreme values, not focusing on central values. So the correct answer is given by option a