Answer:
The answer is 21
Step-by-step explanation:
Firat add 5 and 2. Then you multiply the answer of 5+2 and 3. 
 
        
             
        
        
        
Answer:
Equation to determine crystals total bill (T) =(7.7+2x) - 1.50
Step-by-step explanation:
Given:
Number of bottles of pop purchased = 4
Number of candy bars purchased =  3
Number of chips bag  purchased = 2
Cost of per bottle of pop = $1.25
Cost of per candy bar = $.90
Cost of the coupon  = $1.50
To Find :
Equation to determine crystals total bill (T) given the cost of one bag of chips = ?
Solution:
Let the cost of one chips bag be x
Cost of  4 bottles of pop
=>
=>$ 5
Cost of 3 candy bars 
=>
=>$ 2.7
Cost of 2 bags of chips 
=>
=>$ 2x
Now the total cost of the bill is
T = 5 + 2.7+ 2x
T =7.7+2x
Also Krystal had a coupon worth $1.50, the cost of the ticket will be
T =(7.7+2x) - 1.50
 
        
             
        
        
        
( sorry for commenting, I need points to ask questions I dearly apologize!)
        
             
        
        
        
Answer:
1.148698
Step-by-step explanation:
 
        
             
        
        
        
(-1)(-1)(-1)+(-1)=-1-1=-2
-2
Hope this helps!