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OpenStudy (nannie):
(x=1 is the day tickets go on sale). Tickets= -0.2x²+12x+11 (Is this right?) a.Does the graph of this equation open up or down? How did you determine this? If a<0 the graph opens down. a=-0.2, so the graph would open down because, the parabola is less than 0. b. Describe what happens to the tickets sales as time passes. I am not sure how to show it! c. Use the quadratic equation to determine the last day that tickets will be sold. How would I show this problem? Note. Write your answer in terms of the number of days after ticket sales begin.
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