Set up the equation:
4(8.75x-2)=97
35x-8 =97
35x =97+8
35x =105
x. =3
The value of x is 3.
        
             
        
        
        
We start with

We can factor x at the numerator:

So, assuming  (otherwise the expression would make no sense) we can simplify it:
 (otherwise the expression would make no sense) we can simplify it:

This equation has no roots, so we can't simplify it any further.
 
        
             
        
        
        
Answer: 10 inches.
Step-by-step explanation:
 Since the pecan pie is a circle, you can use this formula:
 
 Where "r" is the radius and  is the central angle of the arc in radians.
 is the central angle of the arc in radians.
 If the pecan pie has been cut into 8 equal pieces then the central angle is:
 
 Now you know the arc length and the central angle, then, you can solve for "r" from   :
:
  
 Substituting values, you get that the radius of the pecan pie rounded to the nearest whole number is:
 