Answer:
domain - all real numbers 
range - y is greater then or equal to 0 
Step-by-step explanation:
 
        
             
        
        
        
A hemisphere.  The formula for a hemisphere is V = (2 / 3)πr^3<span>. r is the radius. if you are given a radius, plug it into the formula to find the answer if a radius is given. </span>
        
             
        
        
        
The answer is 12, 11.625 rounds to 12 because the more than 5 always rounds up, less than 5 you round down
        
             
        
        
        
Answer:
a) y>-4
Step-by-step explanation:
Isolate the variable. 
Hope this helps. Plz give brainliest.
 
        
                    
             
        
        
        
U need to draw the orthonormal system to indicate