Answer:
14d + 12c -4
Step-by-step explanation:
 
        
             
        
        
        
Answer:
The residual value is -0.75
Step-by-step explanation:
we know that  
The residual value is the observed value minus the predicted value.
RESIDUAL VALUE=[OBSERVED VALUE-PREDICTED VALUE]
where
Predicted value.--> the predicted value given the current regression equation
Observed value. --> The observed value for the dependent variable.
in this problem
we have the point (1,4)
so
The observed value is 4
<em>Find the predicted value  for x=1 </em>

predicted value is 4.75
so
RESIDUAL VALUE=(4-4.75)=-0.75
 
        
             
        
        
        
I believe that the answer is 20.45
        
                    
             
        
        
        
What I did is to add 0.52
 +0.15
then try to find what could equal the same amount with 0.52
        
                    
             
        
        
        
negative multiplied by positives = negative numbers
3 x 5 = -15
negative multiplied by a negative = a positive number
-3 x -2y = +6y
so combine both gets -15 +6y
or a better way to write it is 6y-15