Answer:

Step-by-step explanation:
An arithmetic sequence that is described by the explicit formula ...
   
can also be described by the recursive formula ...
   
Matching parts of the formulas, we see that a1 = 4, d = -7. Putting these values into the explicit formula gives ...

 
        
             
        
        
        
Answer:

Step-by-step explanation:
If I represent the worker's position relative to the surface of the earth then
if we let Δy = the change of position.

 
        
             
        
        
        
By knowing the volume of a triangle and that the triangle has all equal sides
        
                    
             
        
        
        
Answer:
the answer is C 
Step-by-step explanation:
