Answer:
Both are correct.
A) A decimal fraction
B) A common fraction 
Step-by-step explanation:
<u>1 step.</u> Write down 0.4 divided by 1:

<u>2 step.</u> Multiply both top and bottom by 10 (because there are 1 digit after the decimal point):

This fraction is called a decimal fraction.
<u>3 step.</u> Simplify the decimal fraction:

This fraction is called a common fraction.
 
        
                    
             
        
        
        
It would be 39/50 then 13/50 sry I didn't have time to simplify it. 
Hope this helps.
        
             
        
        
        
The answer is 1/3 chances, There are 12 tables in total, 4 red and 8 blue. You can Render that down to 1 red and 2 blue, now there are 3 tables and only 1 is red, therefore the answer is 1/3 chance
        
             
        
        
        
Answer:
40x-11
Step-by-step explanation:
 
        
             
        
        
        
1 gallon = 16 cups
Hope it helps you.