Explain rational, irrational, real and whole numbers, and integers and give examples of each.
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Rational Numebers:  a rational number is any number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q.  For example: 1，2，3,-1，-2，-3

Irrational Numbers: an irrational number is a real number that cannot be expressed as a ratio of integers.  For example: 1/3, 1/7 , 1/9

Real Numbers: a real number is a value that represents a quantity along a continuous line. For example: all rational and irrational numbers.

Whole Numbers: A member of the set of positive integers and zero. A positive integer. An integer.  For example: 142， 20， 1

46.2+112.3

step-by-step explanation:

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24