What is the rule to find the number of people that can be transported by a certain number of ferries?

(1 point)
Start at
Choose
people for one ferry, and add
Choose
people for each additional ferry.

The rule to find the number of people that can be transported by a certain number of ferries is as follows:

Start at (Choose) [the number of people] for one ferry, and add (Choose) [the number of people] for each additional ferry.