Answer:
x = 4
Step-by-step explanation:
I don't know what you mean by sketch pad but here is the working out 
4x + 4 = 20
-4            -4
4x = 16
÷4           ÷4
x = 4
Hope this helps :)
 
        
             
        
        
        
Answer:
Graph A
Step-by-step explanation:
-y=-2-3x
y=3x+2
Slope:3
y-intercept:2
 
        
             
        
        
        
Answer:
x=50/3y 
y=50/3x
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
 
        
             
        
        
        
Answer:
none
Step-by-step explanation:
, the answer 17.25, there must a be a typo in your question