Select the correct answer. Which expression is equivalent to the given expression? Assume the denominator does not equal zero. (4m5n23/m2n)

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

Which expression is not a polynomial?

Explain how you can show five less than a number using an algebraic expression