Answer:
503 $1 tickets sold.
Step-by-step explanation:
Use two equations  
Let x = number of $1 tickets sold  
Let y = number of $1.50 tickets sold  
x + y = 739  
1x + (1.5)y = 857  
First equation ==> y = 739 - x  
Plug this into the second equation  
x + (1.5)(739 - x) = 857  
x + 1108.5 - 1.5x = 857  
- 0.5x = -251.5  
x = 503  
There were 503 $1 tickets sold.  
To find the number of $1.50 tickets, just plug this value of x into either one of the equations.  
(503) + y = 739       (739 - 503 = 236)
y = 236  
There were 236 $1.50 tickets sold.
 
        
             
        
        
        
-8/10,-12/15,-16/20,-20/25,-24/30,etc.
 
        
             
        
        
        
Find the domain by finding where the function is defined. The range is the set of values that correspond with the domain. 
Domain: ( − ∞ , ∞ ) , { x | x ∈ R } 
Range: ( − ∞ , 16 ] , { y | y ≤ 16 }
 
        
             
        
        
        
Answer:25 m
Step-by-step explanation:
 
        
             
        
        
        
Hey there :)
Let 
p represent the number of bags to be bought
We need to collect 
30 stickers and each 
bag has 
3 stickers
                    3p                                =                        30
                      ↑                                                           ↑
Number of stickers in a bad       Number of stickers to be collected

 = 
 p = 10
p = 10We need to buy 10 bags of crisps to have 30 stickers