Posted by Aria on Monday, August 29, 2011 at 5:37pm.
Posted by Aria on Monday, August 29, 2011 at 2:58pm.
This is a concept check on quadratic equation application. I am having trouble with a couple of parts. If anyone can help I would appreciate it.
Suppose you are an event coordinator for a large performance theater. You need to supply information about projected ticket sales to the manager. You provide a quadratic equation that models expected number of sales for each day 'x'. (x=1 is the day tickets go on sale."
Tickets=2x^2+12x+11
I answered a.
B. Describe what happens to the ticket sales as time passes.
I am not sure how to determine this. Do I determine this by the vertex or line of symmetry?
I answered C.
D.Will tickets peak or be at a low during the middle of the sale? How do you know?
Again, this question stumps me. How do you tell something like this with a parabola?
I would appreciate a detailed explanation. I don't want answers as much as how to determine the information.
Thanks for helping.

Algebra  Davis, Monday, August 29, 2011 at 6:10pm
For D).....
Your parabola should be negative because of the 2X^2. SO the parabola when you graph it is a backwards U. The middle of the backwards "U" has a high maximum so your tickets should be at a peak during the middle of the sale.

Algebra  Davis, Monday, August 29, 2011 at 6:14pm
As time passes, the ticket sales get higher. Each time you plug in different values of X, the day tickets go on sale, your Y value increases.

Algebra  Aria, Monday, August 29, 2011 at 8:35pm
Thank you for your help. I understand a whole lot more.
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