There are 31 days in january
        
                    
             
        
        
        
Answer:
No solutions; parallel
Step-by-step explanation:
The equations x=16 and x=3 both have a slope of 0. So when graphed, they would be parallel and there are no solutions between parallel lines.
 
        
             
        
        
        
Solution,
 y = -x-4......(i)
3x + y =- 16.......(ii)
Now,
  Substituting the value of y in equation (ii)
or, 3x + (-x-4)= -16
or,3x - x - 4 = -16
or, 2x= -16 +4
 or, x = -12/2
     : x = -6
Then,
Substituting the value of x in (i) equation;
  or,y= -(-6) - 4
  or,y= 6 - 4
   : y =2
 
        
             
        
        
        
Answer: 12.5
Step-by-step explanation:
area= 1/2 (2.5+7.5) 2.5
sorry if its not clear enough i dont really know how else to explain it