Answer:
8/9 sorry if wrong 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
2x
Step-by-step explanation:
You're dividing 14 multiplied by a number by 7 multiplied by a number. So you'd get 2 multiplied by a number. 
 
        
             
        
        
        
Answer:  14 feet 4 inches
Step-by-step explanation:
Given: The length of the first table = 7 feet 7 inches 
The length of the second table = 6 feet 9 inches 
The total length of two tables = 7 feet 7 inches + 6 feet 9 inches 
= (7+6) feet (7+9) inches
=13 feet 16 inches 
Since 1 feet = 12 inches
The total length of two tables = 13 feet+ (12 inches +4 inches)
=13 feet +( 1 feet +4 inches)
= 14 feet 4 inches
Hence, the total length of the two tables =  14 feet 4 inches
 
        
             
        
        
        
The given sequence is:

a(2)=1
a(3)=3
a(4)=9
We are to find the average rate of change between n=3 and n=4 for the given function.
Average rate of change = 

So the average rate of change for the given function from n = 3 to n = 4 is 6