Answer:
Vertex (-2.5,-300)
Step-by-step explanation:
We are given with h(t)=-16 t^2 +80 t.  We are asked to find the vertex.
X-coordinate of vertex =
Where 'a' is coefficient of  term
 term
'b' is coefficient of 't' term.
From given function, a= -16
b=80
So,
x-coordinate of vertex =
                                 =-2.5
y-coordinate of vertex =
Simplify it,
             =-100 -200
            = -300
So, vertex is at (-2.5, -300).
 
        
             
        
        
        
It is 0.35 is the answers
        
                    
             
        
        
        
You can make 6 different towers. If red was at the bottom, there'd be two different possibilities for that: red, yellow, blue, and red, blue, yellow. Same for if blue was at the bottom: blue, red, yellow, and blue, yellow, red. Yellow also applies: yellow, red, blue, and yellow, blue, red. 3*2=6, so 6 possible towers. 
        
             
        
        
        
Answer:
Step-by-step explanation:
Total distance = 3 + 2.5 = 5.5mi/h
Total time = 0.75h + 2hr = 2. 75 hr
Average speed = 5.5 / 2.75 = 2