The answer should be C: 12
        
                    
             
        
        
        
Yes, it's y= 1/2x because it's 1/2 miles (y) per x weeks
        
             
        
        
        
<span>Partition describes the equal shares of a shape.
</span>
        
             
        
        
        
So subtract 55 from 35
35 - 55 = -20
then, put -20 over 55
-20/55 equals -0.36 repeating, rounded to -0.36, which equals 36%
the negative stands for decrease, so it's around 36% decrease
        
             
        
        
        
Answer:
amount of water: 7, 14, 21, 28, 35
time : 1,2,3,4,5