Answer:
maximize revenue is ( 100 , 40000 )
Explanation:
given data
charges customers between = $65 and $200 per day
linear function n(p) = 800−4p
p = daily rental charge
to find out
company charge each customer per day to maximize revenue
solution
we know that Revenue = n(p)*p
so given equation
R(p) = 800 - 4p × p
R(p) = 800p - 4p²     ...................1
so now find critical point here that is
f' (p) = [tex]\frac{d}{dp}[/tex] 800p - 4p²
= [tex]\frac{d}{dp}[/tex] 800p - [tex]\frac{d}{dp}[/tex] 4p²
= 800 (1) Â - 4 [tex]2p^{2-1}[/tex]
800 - 8p
solve it 800 - 8p  = 0
p = 100
now put extreme point x = Â 100 into equation 1
y = 800 p - 4p²
y = 800 (100) - 4 (100)²
y = 40000
so maximize revenue is ( 100 , 40000 )