Please do not use chat gpt or any ai that's not fair.... It's exponential and logarithmic

l I. I' . 5} Due to employee safety negligence at a nuclear waste facility, 2000 tons of a radioactive element is spilled into the nearby pond. The half-life ofthe radioactive element is 36 days. In order to be declared safe for swimming, based on its size and the amount of water, there must be less than [00 tons of the material found in the pond. How long, to the nearest day, until it is safe to swim again? ( 4 marks)