Well, variables are stuff like x and y because they can represent a number. They are variable in an equation. so if you have (3x^3)+(5X^2)+Y+9 then your variables are x X and Y (im assuming the capital X is there and not a typo) if that was a typo and meant to be lowercase, then its just a 2 variable with the x and y
 
        
             
        
        
        
Answer:
y = -2x + 16.
Step-by-step explanation:
The slope of the perpendicular line = -1 / slope of the given line
= -1 / 1/2 = -2.
Using the point slope form of the equation of a straight line:
y - y1 = m (x - x1)
y - 8 = -2(x - 4)
y - 8 = -2x + 8
y = -2x + 16  is the required equation.
 
        
             
        
        
        
285*0.078=22.23
22.23+285=307.23
It Costs $307.23
        
                    
             
        
        
        
Answer:
Option 4 is your answer.
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
C≈125.66
Step-by-step explanation: