It’s 3n-4
I might be right or wrong 
 
        
             
        
        
        
The answer is 5.
Step-by-step explanation:
To find the interquartile range you must look at the median and the upper and lower halves of the data. The median (12) to the upper half of the data (15) is 3. Next, look at the median (12) to the lower half of the data (10) it is 2. We then add 2 and 3 to get the interquartile range of 5.
 
        
             
        
        
        
Answer:
28.46in
Step-by-step explanation:
C=2πr
C=2π*4.53
C≈28.46in
 
        
             
        
        
        
Answer:
option number 2 should be the answer if I'm wrong I'm mega sorry not that  great at math. :>
 
        
             
        
        
        
21 and 1 because both numbers are odd