If you are looking for x then it is X = 18
        
                    
             
        
        
        
Answer:
A
Step-by-step explanation:
Sn=a(n-1) d
this formula for Calculating arithmetic sequence 
 
        
                    
             
        
        
        
Answer:
18/28, or percentage wise, approximately 64.2%
Step-by-step explanation:
Take the seniors and divide it by the total # of students, and you got your probability!
 
        
             
        
        
        
I did x - 10 =290 
           +10   +10
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             x = 300   so they took $1.00 a day
        
             
        
        
        
Answer:
£624
52 weeks in a year 52 x 12