Answer:
The answer is b I hope this helps sorry if it doesn't
Step-by-step explanation:
 
        
             
        
        
        
You have to distribute the 7 to x and 2 so :
7x+14=2x-1
Add one to both sides (inverse operations)
7x+14=2x-1
 +1 +1
7x+15=2x
Cross Cancel by subtracting 7x from both sides 
7x+15=2x
-7x -7x
15=-5x
Divide by -5
15/-5= -5/-5
X= -3
        
             
        
        
        
So, here we have an exponential function.
Remember that an exponential function has the form:

Where a represents an initial amount, and r is the rate of this amount to change. (Increase, or decrease).
So, given that the population of City A in 2000 was 40 thousand people and the population increased by 13% each year, we can say that 

So, 

For city B:

But something different happens with city C. This is not an exponential function, this is a linear function.
So,

 
 
        
             
        
        
        
Weight of 1 c
3 c = 2.25 - empty bucket
3 c = 2.25 - 0.75
3 c = 1.5
c = 1.5/3 =1/2
Jug Weigh = (1/2)x +0.75
        
             
        
        
        
The 10 Common Positive Emotions:
- Love.
- Serenity.
- Forgiveness.
- Awe.
- Joy.
- Interest.
- Hope.
- Pride.
Examples of negative thoughts include: All or nothing: “If this date isn't successful, I'll be single forever.” Overgeneralizing: “I've been bad at every single job I've had.” ... Mind reading: “All my friends/co-workers/family think I'm mad 
- <em>BRAINLIEST answerer ❤️✌</em>