Answer:
Step-by-step explanation:
 
        
                    
             
        
        
        
I'm assuming each child will get one cup of milk so there is 2cups to a pint 2pints to a quart and 4 quarts to a gallon which makes 16 cups to a gallon . 16*8=104cups or children with milk
        
             
        
        
        
$12,716.884 Each year subtract 7% of the respective number.
        
             
        
        
        
Answer:
x=-3 and y= -6
Step-by-step explanation:
we have 
6=-4x+y and -5x-y = 21
6+4x=y we substitute y in the second equation
-5x-(6+4x)=21
-9x-6=21
-9x=27
x=-3
we substiture x in the second
-5(-3)-y =21
15-y=21
15-21=y
y=-6
 
        
             
        
        
        
Answer:
Step-by-step explanation:
just simplify the LHS first.
You can either multiply 1/5 by (x+3) and then solve
or 
multiply both sides by 5 to get rid of 1/5 on LHS
I will multiply by 5
(x+3)= -10x-15     ( 5*1/5(x+3)= -5(2x+3)
now rearrange the equation
x+3=-10x-15
-10x-15-x-3=0
-11x-17=0
-11x=17
x= -17/11