Identifying Parts of an Expression

In the expression $$4x-12$$ , what is $$4x$$  ?

List the terms in this expression. $$7x-6+8$$

How many terms are in the expression

$$3a+2b-c+10$$  

Which term contains a coefficient? May be more than one correct answer.

A number with no variable attached is called a  _____

x,y,a,s,t...  These are called

A letter that represents an unknown number is called a _____.

What is the coefficent in the following expression? $$6-x+8$$  

The number before a variable is the _____.

A letter that represents a number is called a _____.