Answer:
SOMATIC SYMTOM AND RELATED DISORDERS. 
Explanation:
When an individual is obsessed with physical symptoms of an ailment. This causes them to become distressed and unable to cope with normal daily routine.
 
        
                    
             
        
        
        
if you keep it balanced, you will be on your way to becoming a better person
 
        
             
        
        
        
The mean of this dataset is calculated by summing all of the numbers you have and through diving them with the amount of numbers you have - so
18 + 15 + 22 + 18 + 25+ 19 + 23 = 140
140 / 7 = 20
Mean = 20
        
                    
             
        
        
        
A flexible payment plan :)
        
             
        
        
        
They will start to better understand things at a younger age also they won't have to do/study things at a younger school since youve told them qbout