Answer:
72
Step-by-step explanation:
216/3=72 in each bus.
 
        
                    
             
        
        
        
F(x) = -5x - 4
g(x) = 6x - 7
f(x) + g(x) = (-5x-4) + (6x-7)
f(x) + g(x) = x - 11
        
                    
             
        
        
        
44. You can come to this answer by using algebra, 
1/2x = 22
Multiply both sides by 2(denominator) thus,
X = 44.
Or you can use lateral thinking and realise that if 22 is 50%, you need to multiply by 2 to reach 100%.
        
                    
             
        
        
        
Use the distance formula: d² = (x₂ - x₁)² + (y₂ - y₁)²
d² = 50² + 80²
    = 2500 + 6400
    = 8900
d = √8900
  = 94.3
Answer: 94.3 km