The answer is #1. Hope this helps
 
        
        
        
Just list the factors of 24. Those are the possible numbers of students that can be in each row. 
1,2,3,4,6,8,12,24 are the possible row sizes.
        
             
        
        
        
This relation is a function. None of the x-values repeat. Each y-value belongs to a specific x-value.
 
        
             
        
        
        
I will assume it is 2.5% interest rate over 2 years and not per year. If this isn’t the case then let me know.
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Well $1250 divided by 100 = $12.50
This is 1%-
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To make 2.5% we do-> $12.50 x 2.5= $31.25
This makes our interest rate $31.25
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To get our total amount.....
$1250 + $31.25 = $1281.25