Scottie is standing next to a lighthouse on the edge of a cliff overlooking the ocean. The cliff is 30 meters above sea level, and the lighthouse has a height of 15 meters. There is a man fishing in a boat directly below Scottie who has hooked a fish that is 10 meters below the surface of the water. ​

​a. Use positive and negative numbers to represent the locations in relation to sea level.

​Scottie =
30

​

​Top of the lighthouse =

​

​The boat =

​

​The fish =
−10

​

​b. How far is Scottie from the fish?
meters.