An observation deck extends 311 feet out above a valley. The deck sits 261 feet above the valley floor. If an object is dropped from the observation deck, its height h in feet, after t seconds, is given by h= - 162 +261. How long will it take for the object to be 5 feet above the valley floor?
It will take seconds for the object to be 5 feet above the valley floor.
(Type an integer or a decimal)