Answer:
Alex will need 14 bags
Step-by-step explanation:
B= 4(2x+7)+3(2x+7)
and
2x+7=2
First, we should solve the second equation to obtain x:
2x+7=2
2x=2-7
x= -5/2
Then, we use this answer to calculate B:
B=4(2(-5/2)+7)+3(2)
B=4(-5+7)+6
B=4(2)+6
B=8+6
B=14
Alex will need 14 bags
 
        
             
        
        
        
Answer:
D
Step-by-step explanation:
It says less than do I think it should be d 
Sorry if I am wrong
 
        
                    
             
        
        
        
How is it possible to know how much he started with? Or is it not asking for an exact amount?
        
             
        
        
        
Answer:
Just units
Step-by-step explanation:
Looking for perimeter, not area and volume