Question

If the function b(t) gives the number of boats it takes t people to cross a river, what is the appropriate domain?
A)
integers
B)
natural numbers
C)
real numbers
D)
whole numbers

Answer 1

integers

Answer 2

I wouldn't use integers as the domain, it makes no sense to have a negative amount of people cross. Natural numbers is more appropriate

Answer 3

NO

Answer 4

why not?

Answer 5

Sorry guys, the correct answer was Whole Numbers.

Answer 6

It depends on the way they defined natural numbers :)
Some define it as {0, 1, 2, 3, ...}, others define it as {1, 2, 3, ...}

They probably defined it as {1, 2, 3, ...} and the whole numbers as {0, 1, 2, 3, ...}. In that case it would be whole numbers then but you'd have to check what they see as the natural number set