ANSWER
-5 is a real number, a rational number, and an integer
EXPLANATION
Rational number are numbers which you can write as a quotient of two integers. Integers are non-decimal numbers that can be positive or negative. We can therefore write -5 as -5 divided by 1 (-5/1) and thus classify -5 as rational.
In fact, you can classify -5 into other categories.
-5 is all of the following
⇒ it is a real number
⇒ it is a rational number
⇒ it is an integer
Whole numbers can be considered as {0, 1, 2, 3, ...}
Natural numbers can be considered as {1,2,3,...}
so -5 is not a whole or natural number.
[tex]\boxed{ \begin{array}{l r} \textbf{real numbers } (\mathbb{R}) \\ \boxed{ \begin{array}{l} \textbf{rational numbers } (\mathbb{Q}) \\ \boxed{ \begin{array}{l} \textbf{integers } (\mathbb{Z})\\ \boxed{ \begin{array}{l} \text{\footnotesize whole numbers ($\mathbb{W}$)} \\ \boxed{ \begin{array}{l} \text{\scriptsize natural numbers ($\mathbb{N}$)} \end{array}} \end{array}} \end{array}} \end{array}} & \boxed{ \begin{array}{c} \text{irrational numbers} \\ \ \\ \ \\ \ \\ \ \end{array}} \end{array}}[/tex]
