Answer: X=5.25
Explanation: the entire angle is a 90. 90-6=84. 84 divided by 16 is 5.25
        
                    
             
        
        
        
Since you know that the equation of straight line is y=Mx + c
Where m mean gradient , and c means intercept 
We don’t know our intercept neither do we know our gradient 
So we have to find these to get our equation 
Therefore, to find m( gradient) from the table 
We are going to use the formulae for gradient which is 
 M=y2-y1 / x2-x1
I.e from the table 
 M= 23-15 / 4-2
 M=8/2
 M=4 
Therefore how gradient is 4
        
             
        
        
        
Answer:
The answer is C so X is=16