Mathematics, 30.08.2019 04:00 terrasami2330

Can someonei did most of it but i do not know what to write for the last question d. can someone me asap .
a video game designer decides to include a character in a new game that only moves along a parabolic path. the designer uses the function y=-x^2+50x+10 to model this character’s path, where y is the height of the character in pixels and x is the time in seconds that it takes the character to move across one parabolic path.
a. is the vertex of the function a maximum or minimum point and how can you tell?
b. find the x-coordinate of the vertex. show all work leading to your answer and write the answer in simplest form.
c. find the y-coordinate of the vertex. show all work leading to your answer and write the answer in simplest form.
d. write the vertex as an ordered pair (x, y). what does the vertex represent for this
situation? write 1-2 sentences to explain your answer.

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Can someonei did most of it but i do not know what to write for the last question d. can someone me...