The following table showes the number of hours a cleaning company spends on cleaning apartments 1 2 3 4
3 6 9 12

What does the rate of change represent? The number of hours it takes to clean one apartment or the number of apartments cleaned each hour.

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .