A 330-Room Hotel Is Two-Thirds Filled When the Nightly Room $\$ 55.00$

Multiple Choice

A 330-room hotel is two-thirds filled when the nightly room rate is $70.Experience has shown that each $5 increase in cost results in 10 fewer occupied rooms.Find the nightly rate that will maximize
Income.

A) $\$ 55.00$
B) $\$ 180.00$
C) $\$ 90.00$
D) $\$ 270.00$
E) $\$ 117.50$