N-3, n-2, n-1, n  and the sum is
4n-6=198  add 6 to both sides
4n=204  divide both sides by 4
n=51
So the fourth number is 51.
        
             
        
        
        
Y = 1/3x + b
Plug in the point
3 = 1/3(2) + b
3 = 2/3 + b, b = 7/3
Solution: y = 1/3x + 7/3
        
             
        
        
        
Answer:
Step-by-step explanation:
66.6344086
 
        
                    
             
        
        
        
15,9,8 can be divided by 3
so, the greatest number of fruit in each basket is 3
        
             
        
        
        
45 Cards 
12 friends invited; 1/2 came 12 x 1/2=6
Let x stand for the number of cards each friend received
Armando kept 3
6x = 45-3
6x =  42
__     __
6       6
x = 7  
Each friend received 7 cards