He should take out the cupcakes at 7:15! Hope this helps :D
        
             
        
        
        
Answer:
Step-by-step explanation:
The two rules are :-
15 - 10(n - 1)
25 - 10n
 
        
                    
             
        
        
        
Answer:
D
Step-by-step explanation:
Graph the points. Then count the units vertically and horizontally. See picture.
 
        
             
        
        
        
1)
A has a greater principal
2) 
Principal of A is $500, the principal of B is $400, so A's principal is greater by $100
3) 
Annual interest rate of A:
10/500 x 100
The interest rate of B is higher. 
4) B's annual interest rate is 5% and A's annual interest rate is 2%, so B's is higher by 3%.
Hope this helps! Have a great Tuesday! 
 
        
             
        
        
        
Answer:
53
Step-by-step explanation:
they are a linear pair so x + 2x + 21 = 180 so you subtract 21 from both sides, combine x and 2x then divide by 3 to get 53