The average person's hair grows 1/2 inch per
month. How long will the hair grow in one year?

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.

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Define multiplicative inverse. give an example of a number and its multiplicative inverse.