Answer:

Step-by-step explanation:
P, A, and R are collinear.
PR = 54


To solve for the numerical length of PR, let's generate an equation to find the value of x.
According to the segment addition postulate:

 (substitution)
 (substitution)
Solve for x

Combine like terms


Add 2 to both sides


Divide both sides by 7



Plug in the value of x into the equation


 
        
             
        
        
        
C. is not a function since all the F9x) numbers are identical
        
                    
             
        
        
        
Hey there! 
The answer is D. 1/5 
An explanation is in the attached image below. 
Hope this helps!
 
        
        
        
Answer:
2
Step-by-step explanation:
f(x)=x^2+1
now,
f(1)=1^2+1
 =1+1
 =2