The answers I have gotten are 
A- x+y= $25
B- $95 
        
             
        
        
        
First let's define vertex: A point on the curve with a local minimum or maximum of curvature. If we look for the minimum and maximum value of the equation y=x^2+5: minimum value X=0, substitute in the equation to get the maximum value of Y y = 0^2 + 5y = 0 + 5y= 5 so the ordered pair is (0,5) Hope That Helped =D
        
                    
             
        
        
        
boy or an A student is 
29 made an A + 8 boys who did not make an A
37 who made an A and/or who is a boy
37/50
 
        
             
        
        
        
THAT LINK IS A SCAM DO NOT CLICK IT!!!
Anyways here’s the answer:
160 cm squared. 
You find volume by doing length x width x height and then take that answer and divide it by 3. When you do 8x6x10, 480, and 480 divided by 3 is 160.