Mr. Richardson works at Sunshine Valley's community pool. The pool needs maintenance, so Mr. Richardson is using a pump to drain it. This table shows the depth of the pool at different times after Mr. Richardson starts the pump.
Time (hours) Depth (feet)
1 3.5
2 3
3 2.5
4 2
5 1.5
Which function describes the depth, in feet, after t hours?
The depth of the pool is decreasing by 0.5 feet every hour.
Therefore, the function that describes the depth in feet after t hours is:
Depth(t) = 3.5 - 0.5t