Answer:
2.19
Step-by-step explanation:
 
        
                    
             
        
        
        
12h + 44 = 15h + 35
h= number of hours that Val and Tony work
        
             
        
        
        
Answer:
   D)  {-1}
Step-by-step explanation:
A rational expression is "not defined" when its denominator is zero. Hence to find values of x that make the expression "not defined," you solve the equation ...
   denominator = 0
   2x +2 = 0 . . . . . . put the actual denominator into the equation
   x + 1 = 0 . . . . . divide by 2
   x = -1 . . . . . . . . subtract 1
The expression is "not defined" for x in the set {-1}.