You work at the front desk of a luxury hotel. Guests staying at the hotel have two options for accessing the hotel's wireless in
ternet. The first involves a charge of $25 a day plus ten cents for every minute connected to the network. The second is a flat fee of $60 per day with unlimited access. How many hours would a guest who is staying at the hotel for three days need to spend on the internet during that time to save money by using the second option?
180 < 75 + 0.10m 180 - 75 < 0.10m 105 < 0.10m 105 / 0.10 < m 1050 < m.....this is minutes, we need hrs 1050/60 < m 17.5 < m.......the guest would have to spend more then 17.5 hrs
The total number is 12 (assuming the dice would be rolled 12 times) 7 is a number in the range and it will appear once in the 12 rolls because each number shows each time. 1 (how many times 7 will show)/ 12(total number of rolls)