Answer:
It would take the smaller pipe 28 minutes to fill up the truck. 
Step-by-step explanation:
Since the larger pipe takes 84 minutes and is three times faster than the smaller pipe, you have to divide 84 by 3 to get 28. To check if this is correct you have to multiply 28 by 3 and you get 84. Showing that the larger pipe is three times faster. 
 
        
             
        
        
        
You just subtract the number
        
                    
             
        
        
        
Answer:
Sales = n  ($x + $y)
 ($x + $y)
Step-by-step explanation:
The basic simple sales equation is
Quantity  Price = Sales
 Price = Sales
Here in the given question, 
Total quantity of sales = n
Price = Cost + markup
(Markup refers to the profit added to cost)
Thus price = $x (cost) + $y (markup)
Sales = n  ($x + $y)
 ($x + $y)
Sales amount is the total amount received from sales of products, total quantity at some price provided.
 
        
             
        
        
        
assuming that 0 apples costs 0 dollars
and 16 apples costs $8
so we have the points
(0,0) and (16,8) in form (x,y)
graph below
 
        
             
        
        
        
1.   iThis  is shaped like a V with its vertex at the point (0,5)
( its ( 1,7)
2. -3 <= -1-1 = =2
so its (-1, -3)