Have you ever wondered why some objects sink while others float? People float in the salt water of the Dead Sea. Pebbles sink when tossed in a river. In this chapter's first activity, you will measure the masses and volumes of several liquids. You will use your measurements and an equation to calculate the density of each liquid.

In this chapter you will learn: how to write and solve multi-step equations how to write and solve two-step inequalities how to find simple interest and compound interest how to solve problems by writing equations