The answer will be in the picture
 
        
        
        
Answer:
There are 25 students in the class.
Step-by-step explanation:
Since we know the percentage of students who want an ice cream party is 20%, and 5 students want an ice cream party, we know that:

, where S is the total amount of students. We can then solve for S:
 Given equation
 Given equation
 Multiply by S
 Multiply by S
 Divide by 0.2
 Divide by 0.2
Therefore, there are 25 students in the class.
 
        
                    
             
        
        
        
    14x + 10y = 72
    14x +   4y = 96
                6y = -24
                 6       6
                  y = -4
    14x + 10y = 72
14x + 10(-4) = 72
       14x - 40 = 72
             + 40 + 40
              14x = 112
               14      14
                  x = 8
            (x, y) = (8, -4)
        
             
        
        
        
Answer:
im sorry im not sure but i think 9
Step-by-step explanation: