Question

The number of school buses needed to transport students on a field trip is given by the function f(x) = x/40. What if the domain of this function? Please explain.

A. x is the set of all real numbers

B. x is the set of all integers

C. x is the set of all non-negative integers

D. x is the set of all non-negative real numbers

Answer 1

The domain of the function are all the values of x that are possible for the given equation and that will make the equation true. Since the number of buses cannot be a fraction, the values of x should be divisible by 40. The answer to this item should be letter B.