Answer: Percentage increase: 57%
Percent increase if the airline charges an additional 50:  14.5% or 15%
Depends if your teacher wants more accurate results with the decimal, or rounded up with 15.
Step-by-step explanation:
Ill explain in the comments bc for some reason its not letting me put it here
 
        
             
        
        
        
Answer:
I guess Sofia is doing better than the other three students 
 
        
                    
             
        
        
        
Answer:
4 gigabytes
Step-by-step explanation:
64+12+12+12+12=113
 
        
                    
             
        
        
        
Answer:
x=20
Step-by-step explanation:
180=2x+6x+20
180=8x+20
160=8x
20=x
 
        
             
        
        
        
Answer:
79
Step-by-step explanation:
60<xy<100
y -2 =x
if it is prime
y cannot be even
so y could be      1,3,5,7,9
x would then be 9,1,3,5,7
but to be between 60 and 100 
x must be 7 or 9
so the number must be 79 or 57
57 is not prime so
the number is 79