Answer:
84 sqmm
Step-by-step explanation:
hope it helps. ........።..
 
        
                    
             
        
        
        
Price after 9% increased 1800
Price before increase 1800-9%*1800
 =1638
        
             
        
        
        
The answer is A
point c is 5 units to the left and 3 units up when across the y-axis
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A.) Never 
the sum is always irrational