solve to find the critical points
I need some assistance with the following word problem :
The profit made by a cinema from selling bags of popcorn can be modeled by:
NOTE: the is suppose to be also "or equal to" i just didn't know the syntax.
I need to:
a - Find the intervals on which [tex]P[/math is increasing and decreasing.
b - If you owned the cinema, what price would you charge to obtain a maximum profit for popcorn? Explain please.