Question

a company charges 200php for each leather bag on orders of 150 or less. The cost of each bag is reduced by 1 dollars for each order in excess of 150. Create a model for the revenue of the company from selling the bags and determine its maximum value.

Answer 1

revenue = quantity*price. So, for x orders,
r(x) = 200x for x <= 150
r(x) = (200-(x-150))*x for x > 150