Answer:-5x-8y=-5
Step-by-step explanation:
add right sides of equation and even them with result of adding right sides of equation
4x-4y-9x-4y=-2-3
-5x-8y=-5
 
        
             
        
        
        
Answer:
For each ticket sold they earned 3 dollars
Step-by-step explanation:
 
        
             
        
        
        
Solution set is: ( )
)
Option B is correct
Step-by-step explanation:
We need to find the solution to system of equations

Let:

Putting value of y from eq(2) into eq(1)

So, value of x=7
Putting value of x into equation 1 to find the value of y:

So, value of y = 
Solution set is: ( )
)
Option B is correct
Keywords: System of equations
Learn more about system of equations at:
#learnwithBrainly
 
        
             
        
        
        
Answer:
350
Step-by-step explanation:
If there are 210 girls, then the number of boys is (210÷3)x7=350.