1) State the vertex, as an order pair (x,y).


(0, 200)

​2) The axis of symmetry is x=
200


​3) What is the most number of shoes the company can sell before their profit drops below zero.


​4) How much profit does the company make when they sell 100 shoes?

3) In order to determine the maximum number of shoes the company can sell before their profit drops below zero, we need more information such as the cost of production, pricing, and profit margin.

4) Without additional information about the cost of production and pricing information, it is not possible to calculate the profit made by the company when they sell 100 shoes.