Answer:
d
Step-by-step explanation:
 
        
             
        
        
        
Answer:
37.8 square feet
Step-by-step explanation:
 
        
             
        
        
        
The 2nd step, you're supposed to combine like terms (20h and 2h) but not the 5 because it doesn't have a h next to it.
        
                    
             
        
        
        
A because it’s less likely to be a freshman
        
             
        
        
        
<span>To do that, you need to set it all to zero and factor:
x^2+8x+15 = 0
(x+5)(x+3) = 0
then put both those in parentheses chunks in their own equations
x + 5 = 0
x + 3 = 0
and then simplify
x = -5
x = -3
So the two points where the parabola crosses the x-axis are -5 and -3.</span>