Question 411096: suppose you have the quadratic equation of
tickets=-0.2x(squared)+ 12x+11 ; x=1 day ticket sales start.
does the graph of this equation open up or down? how do you know Answer by josmiceli(9817) (Show Source):
You can put this solution on YOUR website! The graph opens down, in other words,
it has a maximum, and not a minimum.
Suppose you had ,
The peak is at , and any value (+ or -)
of other than will make
less than the peak.