It is A so you have it right
        
                    
             
        
        
        
Answer:
2 units
Step-by-step explanation:
The given equation of the circle is:

The general equation of the circle is:

Comparing the given equation with the general equation we can say:
g = 4
f = -3
c = 21
The formula for radius of the circle is:

Using these values of the given circle, we get:

Therefore, the length of radius of the given circle is 2.
 
        
             
        
        
        
There no solution sorry man
        
             
        
        
        
Answer: Your answer is the third one, a function assigns to each input exactly one output.
If you have a true function, there will only be one output for each input, if you had more than one, it isn't a function.
 
        
                    
             
        
        
        
Answer:
13.5
Step-by-step explanation:
Round the .45 to .5