Assuming that  :
- The number of the gallons is symbolized by g
- Time per minute is symbolized by t
the equation would be :
g  =  10 + 7.5 t
Hope this helps
        
             
        
        
        
Answer:
4.98
Step-by-step explanation:
 
        
             
        
        
        
Mathematically, a ray is a portion of a line which starts at a point and goes off in a particular direction to infinity.
 
        
        
        
Answer:
684
Step-by-step explanation:
Using proportions (equivalent ratios), we can find the number of students that make up the 57% out of the total number of people: 

Cross-multiply: 100x = (57)(1200)  or 100x = 68,400
Divide:  100x/100 = 68,400/100 
Solve for x:  x = 684 students