The total revenue and total cost functions for the production and sale of [math] TV's are given as [math] and [math]
(A) Find the value of [math] where the graph of [math] has a horizontal tangent line. [math] values is
(B) Find the profit function in terms of [math].
[math] =
(C) Find the value of [math] where the graph of [math] has a horizontal tangent line.
[math] values =
(D) List all the [math] values of the break-even point(s).
If there are no break-even points, enter 'NONE'.
List of [math] values =