D is the one that is decreasing
 
        
                    
             
        
        
        
Use Subtraction
1. Subtract
x+2y=7
3x-2y=-3
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4x+0y=4 SIMPLIFY 4x=4
2. DIVIDE
4x=4
x=1
Substitute that into either of the original equations to get x=1, y=3
        
             
        
        
        
Answer:
 
 
Step-by-step explanation:
Polynomial  is in standard form as it is written in descending order of their powers.
 is in standard form as it is written in descending order of their powers.
 
        
             
        
        
        
the answer is 1.875 pounds