Toll-free telephone numbers typically begin with all of the following except:

Consider the following expression. 9 - (-3) Which of the following expressions is another way of writing this?

A) 3 + 9 B) 3 - 9 C) 9 + 3 D) 9 - 3

Health care professionals should tie back long hair in order to avoid _________________________ of clean materials

Fill in the blank(s) with correct word