Question

Complete the explanation to identify the set of numbers that best describes each situation.The change will be whole dollar amount which can be negative, zero, or positive. Thus the change willbe (an) ____[(a)rational, (b)integer, (c)real, (d)irrational] number.

Answer 1

The set of negative integers is represented below:

`-\infty,\cdots-2,-1`

The set of positive integers is represented as:

`1,2,\cdots\infty`

Combining the two sets above and adding zero (0), we have:

`-\infty,\cdots-2,-1,0,1,2\cdots,\infty`

The set which describes the set of negative, zero or positive whole numbers is the set of integers.

Thus the change will be an integer number.