Respuesta :

Answer:

87 feet

1. You can find the  value of the vertex of the parabola as following:

2. Substitute values:

a=-16

b=70

Then:

 

3. Substitute the value obtained into the equation given in the problem. Therefore, you obtain the following result:

4. To the nearest foot:

h=87 feet

Step-by-step explanation:

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