Identify all the sets to which the number belongs. choose from rational number, irrational number, whole number, and integer. 0.
a. rational number
b. irrational number
c. integer, and rational number
d. whole number, integer, and rational number

Rational number - any number that can be written as a fraction, and if it is decimal then it is repeating
irrational number - numbers that cannot be written as a simple fraction, the decimal goes on forever without ending
whole number - positive numbers that starts from 0.
integer - both positive and negative numbers that are not fractions nor decimals

0.123333IS A RATIONAL NUMBER. Its 3 is repeating.
0.123333... can be written as 37/300 in fraction form.

3x+9+4x+x=8x+9that's the answer for your question.