Me . i need with this. i’m getting very very frustrated ! you can get 35 points !

Notes:

The sign of the coefficient of the quadratic equation determines if the vertex is a minimum or maximum.  Positive looks like ∪ so has a minimum.  Negative looks like ∩ so has a maximum.Maximum/minimum height is the y-value of the vertex.Time to reach maximum height is the x-value of the vertex (which is also the Axis-Of-Symmetry).

 4) maximum

               5) 20.1 ft

               6) 2 seconds

Step-by-step explanation:

4) h(t) = -16t² + 256t

            ↓

            the coefficient is negative so it looks like ∩.  

            Therefore, it has a maximum.

5) h(t) = -16t² + 30t + 6

6) h(t)=-16t²+64t+80

The answer is 6 weeks

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