The table below shows the cost for a popular cruise. There is a booking fee plus cost per day.

Number of days: 4,5,6

Cost$: 675,800,925

The cost per day is $:__

The booking fee is$:__

To find the cost per day, we need to find the difference in cost between each duration and then divide that difference by the number of extra days:

Cost for 5 days: $800
Cost for 4 days: $675
800 - 675 = 125
125 / 1 extra day = $125 per day

Cost for 6 days: $925
Cost for 5 days: $800
925 - 800 = 125
125 / 1 extra day = $125 per day

The cost per day is $125.

To find the booking fee, we can subtract the cost per day from the cost of the shortest duration:

Cost for 4 days: $675
4 days at $125 per day = $500
675 - 500 = $175

The booking fee is $175.