Rational: Any number that can be expressed as a fraction (or a ratio.)
Irrational: Not rational, any number that can't be written down as a fraction. Some examples include

,

, and so on.
Answer:
C or d
Step-by-step explanation:
Answer: the answer is 100
Step-by-step explanation:
Because 25 times 4 equals 100 use a Calculator
Age of a dog (age is a number)