Answer:
Equations:
 --- Cindy
 --- Cindy
 --- Ruben
 --- Ruben
Solution to equation:
Time they have the same amount: 14 minutes
Number of cards they have at that time: 140 flashcards
Step-by-step explanation:
Solving (a): Variables and what they represent
The variables to use are x and y
Where x represent the minutes and y represents the number of flashcards in x minutes
Solving (b): System of linear equation
Cindy:

 per minute
 per minute
Total number of flashcards (y) in x minutes is:



Ruben:
 per minute
 per minute
Total number of flashcards (y) in x minutes is:



Solution to Equations:
Time they have the same amount.
To do this, we  
  expressions
 expressions
i.e.

Collect Like Terms


Number of cards they have at that time.
Here, we simply substitute 14 for x in any of the equations.



or




 
        
             
        
        
        
Answer:
-5
Step-by-step explanation:
slope formula= 
slope of line

 
        
             
        
        
        
Answer:
the answer 61 cups of chocolate 
Step-by-step explanation:
briniest please
 
        
             
        
        
        
A line that passes through (5, 1) can have ANY slope and ANY y-intercept. There are an infinite number of different lines that pass through that point.
        
                    
             
        
        
        
Answer:
41.1
Step-by-step explanation:
The number will be cut off after the digit you are rounding off to.
Rewrite the number, but stop at the 0.
41.0
Now you need to decide if the 0 stays as 0 or if it goes up to 1.
When the next digit is from 5 to 9, the last digit you keep goes up 1. When the next digit is 0 through 4, the last digit you keep stays as it was.
Since the first digit that was dropped is a 7, the 0 goes up one unit to 1.
Answer: 41.1