Isabella is jumping on a trampoline. Her height above the trampoline , in meters, is given by , at seconds after she started jumping.
How many seconds after each rebound does it take her to reach a height of 50 cm during the descent? Round your answer to the nearest tenth of a second.
What fraction of the time is Isabella at least 1.2 m above the trampoline? Express your answer as a percentage correct to one decimal place.
The outside temperature (in degrees Celsius) on a certain day was modeled with , where is the time after midnight in hours. At what times of the day was the temperature ? Give your answer to the nearest minute using a 24-hour format.