C find the y coordinate of the vertex show all work

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c) Find the y -coordinate of the vertex. Show all work leading to your answer and write the answer in simplest form.
y = -6 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.
3. Suppose an investor builds a stock portfolio with a variety of shares in various high tech companies. The value of the stock portfolio is modeled by the function y = 2x 2 – 20 x + 100 , where y is the value of the portfolio in hundreds of dollars and x is the time in months. 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.

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