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
An air letter is another term for an aerogram - a letter sent by air mail.
demonstration. its a battl term
An old term is larceny.
Usually the letter h represents height.
that asks a question or asks for information