Answer:
B. 5(4x+2y)-y 
Step-by-step explanation:
Bring the 5 over and multiply 
5×4 = 20 + x 
=20x (thats the beginning of the expression) 
5×2 = 10 
10y - y = 9 because the - y is basically telling you to get rid of one of the y values so 10 - 1 = 9y 
 
        
             
        
        
        
When x = - 4 then
y = 1/2(-4) -6
y = -2 - 6
y = -8
solution (-4, -8)
answer is 
B. (-4, -8) second choice
        
             
        
        
        
How many levels are in the game? You would take that number and multiply it by 0.72 to find 72% of it.
        
                    
             
        
        
        
Let
x-------------> amount added <span>to each side
</span>A-------------> area increased----------> 84 ft²
we know that
A=(10+x)*(5+x)=84-----------> 10*5+10*x+5*x+x²
50+15x+x²=84----------> x²+15x-34=0
<span>solving the second order equation
</span>x1=-17
x2=2
 the answer is x=2 ft
        
                    
             
        
        
        
Okay, to solve this we simply find 75% of the carton of paper, because 100%-25% = 75%
0.75(27) = 20.25
The carton of paper costs $20.25