Hurryyyyyy!!! which expression is equivalent to 7(1+3)? a.1+21b.7+21c 7+3d.7+4
       
      
                
     
    
    
    
    
    1 answer:
            
              
              
                
                
Answer:
b. 7+21
Step-by-step explanation:
If you do 1+3=4 and then 4 times 7 that equals 28. When you do 7+21 that equals 28 too. So b is the answer 
 
                                
             
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Answer:
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Answer:
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Step-by-step explanation:
 
        
             
        
        
        
The answer is b hopefully I helped
        
                    
             
        
        
        
{x,y} = {-1,-1} 
hope this helps