The fluctuation of water depth at a pier is shown in the figure below. One of the following values gives the positive

difference, in feet, between the greatest water depth and the least water depth shown in the graph. Which value is it?

difference, in feet, between the greatest water depth and the least water depth shown in the graph. Which value is it?

**The greatest water depth is 12 ft**

**The least water depth is 6 feet**

Positive difference

= 12 - 6 {difference between greatest and least depths}

= 6 {subtracted}

**B.) 6**

**Ask Algebra House**