Answer:
The number is -9.
Step-by-step explanation:
If we let the number be x we have the equation 6x + 7 = -47.
6x + 7 - 7 = -47 - 7
6x = -54
x = 054/6
x = -9.
 
        
             
        
        
        
Hi Kristian 
a - 3b = 22 
a = b - 2 
We need to solve a = b -2 for a 
First, we need to substitute b - 2 for a in a - 3b = 22
a - 3b = 22 
b - 2 - 3b = 22 
-2b - 2 = 22
 -2b = 22 + 2 
-2b = 24 
b = 24/-2 
b = -12
Now substitute -12 for b in a = b - 2 
a = b -2 
a= -12 - 2 
a= -14
Thus, the solution is a = -14 and b = -12
The correct option is the last one (-14,-12)
If you have questions about my answer, please let me know. 
Good luck!  
        
             
        
        
        
Your total will be $60, you will have saved $15
        
             
        
        
        
We know that
The exterior angle measures of a polygon must add up to 360°, 
therefore
 360°/72°=5 exterior angles
so
5 exterior angles, would mean 5 interior angles and therefore  5 sides to the polygon
The exterior angle and the interior angle of any polygon are supplementary and must add up to 180°.
exterior angle+interior angle=180°
interior angle=180°-exterior angle
interior angle=180°−72°-------> 108°
Each interior angle is 108°
The sum of the interior angles would be 
5*108°=540°
the answer is
540°