A quadratic function has a minimum value when the function's graph opens upward, and it has a maximum value when the function's graph opens downward. In each case, the minimum or maximum value is the y-coordinate of the vertex of the function's graph. What can you say about a when the function f(x) = ax2 has a minimum value? A maximum value? What is the minimum or maximum value in each case

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answer: your correct answer is b. d.

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answer: input the dimensions of the room to be painted. click the button to calculate the amount of paint and man-hours needed for this job.

interior paint coverage depends on the brand of paint used. the coverage amount is listed on the label of the paint can. use this to adjust the values in the paint coverage section below. paint usually is applied at 350 to 400 square feet per gallon (primer at 200 to 300 square feet per gallon).

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