This answers would be 12x
        
             
        
        
        
Answer:
D) 26/48
Step-by-step explanation:
/ = division sign 
26/48 also means 26 divided by 48.
Simple math.
 
        
                    
             
        
        
        
Answer: 32.2
Step-by-step explanation:
 
        
                    
             
        
        
        
I did not catch well, but i think you already got your answers. Let me explain. For the first part you got your notation right: for 0.0045 the correct scientific notation is 4.5 x 10^-3. Now the second part, the answer would be the first one, the notation that you are giving is the one who corresponds to <span>4.5 x 10^-2, the first option you have. Hope it helps</span>