Answer:the answer is in the picture below 
Step-by-step explanation:plz give brainlist
 
        
             
        
        
        
Answer:
720 degrees.
Step-by-step explanation:
The sum of the interior angles of a convex polygon with  n  sides is
180(n - 2)  degrees.
In this case,  n = 6 sides, so the angle sum is
180(6 - 2) = 180(4) = 720 degrees.
The reason this works is that if you draw a diagonal from one vertex to the others (see attached image), you get 2 fewer triangles than the number of sides.  Each triangle contains a total of 180 degrees, so the total of all the interior angles is 180(n - 2).
 
        
             
        
        
        
Answer:
Step-by-step explanation:
3x + 3
6 + 2x
3x + 2x = 5x
3 + 6 = 9
5x + 9
 
        
             
        
        
        
The answer is $204.Hope this helps.