To which subset of rel numbers does the number -22 belong?

whole numbers
rational numbers
integers
irrational numbers
natural numbers

I know it's an Integer but I'm not sure of the second answer.

Every integer is a rational number because you can divide it by one.

The number -22 belongs to two subsets of real numbers: integers and rational numbers.

Integers consist of whole numbers and their negatives, including zero. Since -22 is a negative whole number, it belongs to the set of integers.

Rational numbers are numbers that can be expressed as a fraction, where the numerator and denominator are both integers. -22 can be written as -22/1, which is a fraction. Therefore, -22 is also a rational number.

To determine which subset of real numbers the number -22 belongs to, we can go through each option you have provided:

1. Whole numbers: Whole numbers include all positive integers (0, 1, 2, 3, ...) and zero. Since -22 is negative, it is not a whole number.

2. Rational numbers: Rational numbers are numbers that can be expressed as a fraction or a ratio of two integers. Since -22 can be written as -22/1, it is a rational number.

3. Integers: Integers include all positive and negative whole numbers, including zero. Since -22 is a negative whole number, it is also an integer.

4. Irrational numbers: Irrational numbers are numbers that cannot be expressed as a fraction or a ratio of two integers. Examples include √2, π, and e. -22 is not an irrational number since it can be expressed as a fraction.

5. Natural numbers: Natural numbers are positive integers starting from 1, so they do not include negative numbers or zero. Therefore, -22 is not a natural number.

In conclusion, the number -22 belongs to the subset of real numbers called integers and rational numbers.