Hi there! The answer is 0 solutions.

First we need to work out the parenthesis (for instance possible by using rainbow technique). 

Now subtract 12.

Now we can see that the right side of the equation is always 8 smaller than the left side of the equation. Because the right is always smaller, this equation cannot be solved. Therefore there are no solutions to this equation. The answer is 0 solutions.
 
        
        
        
Answer:
3
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
120/6.4=20 
It will take her 20 days
 
        
                    
             
        
        
        
The total cost for plumber number 1 expressed as a function of x is
c1(x)=45x+90
 That is, the charge per hour times the number of hours plus the fixed charge for a visit.
Using the same pattern, write the function for the second plumber. Then set the two functions equal to each other and solve for