Answer:
21 + 3a
Step-by-step explanation:
3 (7+a)
distribute 3 into parentheses:
21 + 3a
 
        
                    
             
        
        
        
Answer:
Lateral Area of a Cylinder = 2πrh 
=2π x 3 x 6 
=36π
Option D
 
        
             
        
        
        
Answer: D
Step-by-step explanation: 
 
        
             
        
        
        
The answer is 3. If you set it up in a T table and label x as the number of hours and y as the number of rows. Then use rise over run (y over x) the fractions simplify to 3 over 1.