I believe the answer is D. because -12 + -1 equal -13 
        
             
        
        
        
If we were to put this in terms of a venn diagram, we would have 360 owning only brand X, 500 owning only brand Y, and 80 in between, owning both. Therefore, 80 out of the 580 owners of brand Y may have X as well, which we put into fraction form 80/580, and reduce to 4/29.
        
                    
             
        
        
        
Answer:
333 ft^2
Step-by-step explanation:
Surface area is the sum of all the areas of the shape. 
First, the area of the square in the center is simply 9x9 = 81.
The area of a triangle is (bh)/2, where b = base, and h = height
In the triangle, 9 is the base, and 14 is the height:
(9x14)/2 = 63
There are four triangles of the same area:
63 x 4 = 252
252 + 81 = 333
 
        
                    
             
        
        
        
Answer:
1+1=2
Fighting! You can do this