the variable
That is called a variable.
the variable
A number before a variable (letter) is called the coefficient of the variable. Both of them makes a term, or a monomial.
Valediction
The three-letter term that refers to a yak is "ox."
The term pi comes from the greek letter pi, which is the first letter of the word which in English is "perimeter".
exponent
demonstration. its a battl term
An old term is larceny.
An air letter is another term for an aerogram - a letter sent by air mail.
Usually the letter h represents height.
that asks a question or asks for information