identify the most specific set to which each of the following numbers belongs:

sqrt(144) -
0.121212... -
-9 -
0 -
sqrt(47) -

word bank:
Rational Number
Irrational Number
Natural number
Integer
Whole number

3 answers

sqrt(144) - Rational Number
0.121212... - Rational Number
-9 - Integer
0 - Whole number
sqrt(47) - Irrational Number
you can only use each word in the word bank once
In that case:

sqrt(144) - Rational Number
0.121212... - Rational Number
-9 - Integer
0 - Whole number
sqrt(47) - Irrational Number