Answer:
c
Step-by-step explanation:
It has a constant value.
 
        
             
        
        
        
Since it is a geometric sequence each term will be a specific multiple of the term preceding it, called the common ratio...
126/42=378/126=1134/378=3
The sequence is a(n)=a(3)^(n-1) and we know the second term is 42 so:
42=a(3)^(2-1)
42=3a
a=14
So the first term is 14.
        
             
        
        
        
First we have to find a common denominator 
8×3=21
7/8×3=21/24
2/3×8=16/24
21-16=5
answer is 5/24
        
             
        
        
        
Neither.
This is because one equation is without variables and the other is with variables.
You can cancel out nothing
        
                    
             
        
        
        
The answer is 6 that's how many places its away from zero.