Answer:
no its not 
Step-by-step explanation:
from 2 random samples you cant figure it out 
 
        
             
        
        
        
Math Papa is a very good calculator. You can try it. Just put the equation www.mathpapa.com :)
        
             
        
        
        
Answer:
3 numbers
Step-by-step explanation:
 
        
                    
             
        
        
        
6 feet * 7 feet = 42 feet²
18 feet * 21 feet = 378 feet²
42 feet²  was painted for $52
1 feet²  will be painted for $52/42
378 feet² will then be painted for:  ($52/42) * 378
                                                       = $468
Hence 18 feet by 21 feet will be painted for $468
Hope this helps.
        
             
        
        
        
The answer is 2,320 seats in the amphitheater. Since the seats are increasing at a rate of 4 more seats each row, then just add 4 to the number for each past row starting at 32 since that's where the rest is unknown. Once you find all he numbers just add them up to get your answer. 
I hope I helped!