Answer: Side BC has a length of square root 10 units 
Step-by-step explanation: I just took the test 
 
        
             
        
        
        
First we calculate the volume of the foundation:
Volume (V) = 20 ft * 12 ft * 4 in (1 ft / 12 in)
V = 80 ft^3
 
Since the cost is in cubic yard (yard^3) so convert:
V = 80 ft^3 * (1 yard^3 / 27 ft^3) = 2.963 yard^3
 
So the total cost is:
cost = ($125 / yard^3) * 2.963 yard^3
<span>cost = $370.37</span>
 
        
                    
             
        
        
        
If you simplify it is x^3-x^2-2x+ 24
        
             
        
        
        
And? It’s there a full question?