SOLUTION: Tickets=-0.2^2+12+11
Does the graph of this equation open up or down? How did you determine this?
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Question 334267: Tickets=-0.2^2+12+11
Does the graph of this equation open up or down? How did you determine this?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
For all quadratic functions in the form:
\ =\ ax^2\ +\ bx +\ c)
The graph opens upward if and only if 
John
My calculator said it, I believe it, that settles it
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