Let's say the number is hmmm "a", its reciprocal would then be 1/a
thus 

solve for "a"
 
        
        
        
Answer:
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Answers may vary depending on the person reading the graph.
It is hard to tell what they think crosses nicely. 
For example, I decided that the graph crossed nicely at the following points:



Step-by-step explanation:
I see that the graph crosses at  ,
, , and
, and  .
.
The equation  tells us the
 tells us the  -intercept is
-intercept is  since when
 since when  we have
 we have  .
.
The  -intercept for our graph is
-intercept for our graph is  . Therefore,
. Therefore,  .
.
So far we have the equation:
 .
.
Let's enter the other points creating a system of linear equations to solve:


Let's simplify:


Let's subtract 3 on both sides:


I choose to solve the system by elimination.
Let's multiply the top equation by -3:


Now adding the equations results in:

Divide both sides by 24:

Now using one of the equations we can find  :
:
 with
 with 


Add 13/6 on both sides:



Divide both sides by 2:


So we have the equation:

Let's evaluate  now:
 now:




 
        
             
        
        
        
Answer:
C. 1 / (a(a - 1))
Step-by-step explanation:
View Image
Just know that:
n! = n(n-1)!
    = n(n-1)(n-2)!
    = n(n-1)(n-2)(n-3)!
    = ...
 
        
                    
             
        
        
        
Solutions 
To solve the problem the first step is to m<span>ultiply the whole number by the fraction's denominator (4 x 3).Add the numerator (2) to the product. 
4 * 3 = 12 
12 + 2 = 14 
= 14/3 </span>