Step-by-step explanation:

 
        
             
        
        
        
Answer:
4.05
Step-by-step explanation:

multiply the following 
add the sum (3.5+0.55)
you'll get 4.05
 
        
             
        
        
        
Answer:
You are able to use simplier numbers that can help you understand better
Step-by-step explanation:
 
        
             
        
        
        
I think B I’m
Not
Sue tho so don’t take my word on it but I think it’s B
        
             
        
        
        
Answer:
I believe that it is D
Step-by-step explanation:
A is wrong...
B is wrong (I believe)...
C is wrong...
So D is the only answer choice left.