Given:
The power generated by an electrical circuit (in watts) as a function of its current x (in amperes) is modeled by

To find:
The current which will produce the maximum power.
Solution:
We have, 


Differentiate with respect to x.

      ...(i)
To find the extreme point equate P'(x)=0.


Divide both sides by -30.

Differentiate (i) with respect to x.

 (Maximum)
It means, the given function is maximum at x=4.
Therefore, the current of 4 amperes will produce the maximum power.
 
        
             
        
        
        
So D x= 5 is the right answer
 
        
                    
             
        
        
        
Answer:
x=47
Step-by-step explanation:
We can use the triangle bisector theorem
TK             TV
----------- = -----------
YK               YV
Substituting what we know
87.5            77
----------- = -----------
x-22               22
Using cross products
87.5 * 22 = 77 *(x-22)
Distribute 
1925  =77x - 1694
Add 1694 to each side
1925 + 1694  =77x - 1694+1694
3619 = 77x
Divide by 77
3619/77 = 77x/77
47=x
 
        
             
        
        
        
I know you said 2 numbers but here is a list :)
62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88
        
                    
             
        
        
        
The answer to this question is Errors of Omission
Errors of omission refers to a mistake that happens when the accountant does not do something that he/she should've done. Due to development in accounting software, errors of omission could be evaded by setting some reminder system of each step that must be followed in the accounting process