The answer is 210 children tickets were sold . if you multiply the first equation by 7  it would be 7x+7y=2590. then subtract equation 2 from 1 you will have 4x=840 so x=210. Also you can use substitution method.
        
             
        
        
        



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It will take 2 full gas cans to fill it up!! 
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I hope that helps you out!! 
Any more questions, please feel free to ask me and I will gladly help you out!! 
~Zoey 
 
        
                    
             
        
        
        
The answer is Square *8=h
I hope this helps.
        
                    
             
        
        
        
if we zero out f(x), namely make y = 0, we can get the roots or x-intercepts for this quadratic equation

now, the equation is in x-terms, meaning is a vertically opening parabola, so the axis of symmetry will be x = something, a vertical line.
well, we have two x-intercepts, one at -4 and another at 2, and the vertex is right half-way between those guys
-4------------(-1)------------2
so the vertex is at x=-1, namely the axis of symmetry is x = -1.
 
        
             
        
        
        
Answer:
x = -1
Step-by-step explanation:
2x + 5x = -7
7x = -7
x = -1