Answer:
yes
Step-by-step explanation:
 
        
             
        
        
        
140 tickets sold at the door
Step by Step Explanation:
x = tickets sold in advance
y = tickets sold at the door
We use the formula ax+by=c and a+b=c
x + y = 514
17x + 20y = 9158
y = 514 - x
17x + 20(514 - x)
17x + 10,280 - 20x = 9,158
-3x + 10,280 = 9,158
-3x = -11222
x = 374
This is for tickets sold in advance so we need to find y
374 + y = 514
y = 140
140 tickets were sold at the door
        
             
        
        
        
Answer: is it 0.258 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
The answer to your question is $1.29
Step-by-step explanation:
Data
Total amount of cupcakes = 50
Total amount of sugar = 3 1/2 cups = 3.5 cups
Cost of 5-pound bag = $3.69
2 cups = 1 pound
Total cost = ?
Process
1.- Calculate the amount of pounds needed
                   2 cups ------------------ 1 pound
                   3.5 cups ---------------  x
                   x = (3.5 x 1) / 2
                   x = 3.5 / 2
                   x = 1.75 pounds
2.- Calculate the price of 1.75 pounds
                   5 pounds -------------- $3.69
                   1.75 pounds ----------    x 
                   x = (1.75 x 3.69)/5
                   x = 6.46/5
                  x = $1.29
3.- Conclusion
The cost of sugar to prepare 50 cupcakes is $1.29