You can do this by comparing your equation to the general form of equation of a circle
( x - a)^2 + (y - b)^2 = r^2       where (a,b) is the centre and r = radius:-
(x  + 9)^2   (y + 6)^2 = 9 
so (a,b) = (-9,-6)  and r = 3
so the answer is B
        
                    
             
        
        
        
Answer:
2 2/3
Step-by-step explanation:
For each of her snack bag, she can fill it with a 1/3 cup of pretzels 
1/3 x 8 = 2 2/3 cups
 
        
             
        
        
        
 (2x - 5)° + 45° = 180°
2x° + (-5 + 45)° = 180°
 2x° + 40° = 180°
 2x° = 180° - 40°
 2x° = 140° 
 x° = 140 ÷ 2
 x° = <u>7</u><u>0</u><u>°</u>
So, the value of x is 70°
<em>Hope it helps and is useful</em><em> </em><em>:</em><em>)</em>