How do i solve 1.4 code practice: question 3 on edhesive?

Im doing this last minute and literally none of my neighbors or people that my dad works with use excel so if anyone could me make up an example

Many everyday occurrences can be represented as a binary bit. for example, a door is open or closed, the stove is on or off, and the fog is asleep or awake. could relationships be represented as a binary value? give example.

In cell b18, enter a formula to calculate the amount budgeted for meals. this amount is based on the daily meal allowance and the total travel days (# of nights+1).