Answer:
The answer is B.) The diameter of the fir tree when planted and 20 inches
Step-by-step explanation:
The y-intercept is the initial diameter of the fir tree (10 inches). At the end of 50 years, the tree's diameter is 30 inches. Therefore, 30 − 10 = 20 inches of growth occurred over the 50 year period. The diameter of the fir tree when planted. The fir tree's diameter was 10 inches when it was planted.
 
        
             
        
        
        
Answer:
 
 
Step-by-step explanation:

 
        
                    
             
        
        
        
Step-by-step explanation:
The answer: -1/2
2-3/4-2= -1/2
 
        
             
        
        
        
Answer:
Step-by-step explanation: 
 
        
                    
             
        
        
        
To answer this you need to multiply 20 by 20. this gives 400cm
or you can also square 20