Answer:
The answer is 190mm2
Step-by-step explanation:
(3x5)x2  30
(3x10)x2  60
(5x10)x2  100
add them all up to get 190
 
        
                    
             
        
        
        
Let the number be x, therefore, its square is x², and 44 more than the number is x+44 whose square is (x+4)².
Thus the sum will be x² + (x+44)²² = 8080
                                  x² + x² + 88x + 1936= 8080 Combining the right terms 
                                  2x² + 8x - 6144 = 0 dividing by 2
                                     x² + 44x - 3072 =0 solving for x
                          x = 37.6 or -81.6
Therefore, the positive number is 37.6
                                
        
                    
             
        
        
        

Domain: x² - 4 ≠ 0
                 + 4 + 4
                    x² ≠ 4
                 √x² ≠ √4
                    x ≠ ±2
           x ≠ -2 and x ≠ 2
     (-∞, -2) ∨ (-2, 2) ∨ (2, ∞)
Range: y ≠ 1
    (-∞, 1) ∨ (1, ∞)
Intervals: Increasing: (0.25 , ∞)
              Decreasing: (-∞, 0.25)
Symmetry: X-axis: Not Symmetric
                  Y-axis: Not Symmetric
                  Origin: Not Symmteric
Extrema: Maximum Relative: x = 0
                Minimum Relative: Nothing
 
        
             
        
        
        
The answer is obviously not A and B so that leaves us with only C or D and the one that id the best choice would have to be C because it gives good information about how it is used and where it would be installed 
Hope this helped : ) 
        
             
        
        
        
Those are a lot of problems. Sorry I can't help you because I can't really see them.