Answer: 
15m=-23
Step-by-step explanation:
 
        
             
        
        
        
Answer:
how long are you working? what are you asking for?
what is the percentage for?
Step-by-step explanation:
 
        
             
        
        
        
This trend line shows a general pattern, and since we are with biological samples this trend line will not always be true.  The outliers could be from either a genetic difference or an environmental difference that occured in the persons life.
        
             
        
        
        
Can you take a better picture
        
                    
             
        
        
        
Answer:
The ratio of George age to Carl's age is 1:12.
Step-by-step explanation:
Let the age of George be 'g'.
Let the age of Alex be 'a'.
Also Let the age of Carl be 'c'.
Given:
The sum of their ages is 68.
So equation can be framed as;

Also Given:
Alex is 12 years older than George.
So equation can be framed as;

Now Given:
Carl is three times older than Alex.

But 
So we get;

Now Substituting equation 2 and equation 3 in equation 1 we get;

Subtracting both side by 48 using subtraction property of equality we get;
 
Now Dividing both side by 5 using Division property of equality we get;

Hence George age 
Now Alex age 
Also Carl's age 
Now we need to find the ratio of George age to Carl's age.

Hence  the ratio of George age to Carl's age is 1:12.