If a quarter of the salad is 6 ounces, then because you had 3/4th ounces of cucumber, you can do 6 multiplied by 3, which is 18.<span />
        
             
        
        
        
The answer is C. f(n)=f(n-1)•3 
Look at the photo I attached it shows how. 
Hopefully this helps. This is how I was taught.
 
        
        
        
Answer:
$84
Step-by-step explanation:
21x4=84
25x4=100
 
        
             
        
        
        
Answer:
36
Step-by-step explanation: