Answer:
You wrote the question wrong...
m is not -16 it is -1/6 (that is a big difference) 
y=mx+b
y=-1/6x+b
3 = -1/6(12) + b
3 = -2 + b
b=5
Step-by-step explanation:
 
        
             
        
        
        
18 |16 | 13 | 10 | 9.5 | 8.5 | 7.5 | 6
                      
9.75 is the FINAL answer
        
                    
             
        
        
        
Answer:
C. 4:13
Step-by-step explanation:
there are 4 students in the 4th grade and 4+9= 13 so it is 4:13
 
        
             
        
        
        
The formula for calculating area of parallelogram is given as:
Area = base x height
So, here in this question, 
Base = 3. 5 units
Height = 2 units
Area = 3.5 x 2
 = 7 unit^2
 
        
             
        
        
        
2x - 10 -12x + 6 = 6 
-10x -4 = 6
-10x = 10
-x = 1
x = -1