we have 
x=5−2y ---> multiply by 3 both sides-----> 3x=15-6y-----> 6y=15-3x----> equation 1
6y=10−3x------> equation 2
equation 1 and equation 2 has the same slope
the lines are parallel
slope m=-3/6-----> m=-1/2
so
there are no solution
the answer is the option
b. There is no solution
 
        
             
        
        
        
Answer:
18
Step-by-step explanation:
4.5 liters / .25 liters/pcup = 18 pcups
 
        
             
        
        
        
Because the sofa usually sells for $800, we know that's 100% of the price. 
100% = $800
Let's find 1%.
1% = $800/100
1% = $8
Next, multiply $8 by 75 to find the percent of the sofas price when it's $600.
75% = $600
We now know that $600 is 75% of the sofas original price. 
100% - 75% = 25% 
The percent of decrease I'm the sofas sale price is 25%.
Hope I got that right, the question was worded a little strangley so I wasn't quite sure what you were asking :)
 
        
             
        
        
        
X-3y, x=3, y=-2
(3)-3(-2)
(3)+(3*2)
3+6=9
        
             
        
        
        
Answer:
$15.95
Step-by-step explanation (without words):
9.57/3= 3.19
3.19*5= $15.95