Powers and Polynomials

What is the definition of a variable?

• The number of times a certain number is multiplied by itself.

• A value in an expression or formula that does no change.

• A symbol used to represent an unspecified number.

• A part of an algebraic expression often separated by + or -.

Which of the following has a degree of seven?

• Undefined

• Monomial

• Binomial

• Trinomial

• Quadrinomial