Answer:
-6x+2y=-18 = 
-3x-2y=54 = 
Step-by-step explanation:
I hope I understood this correctly. 
 
        
             
        
        
        
Answer:
36 Teachers in Total
Step-by-step explanation:
I would use Ratio. 
Students: 128 + 121 + 135 = 384 total students 
Teachers: Students 
 3 : 32 
 36 : 384 
384 ÷ 32 = 12
12 x 3 = 36
 
        
             
        
        
        
The ship therefore travels 8 nautical miles per hour. If the ship traveled for 1 hour, then it traveled 8 nautical miles. If the ship ... If the ship traveled for 18 hours, then it traveled 144 nautical miles. 
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