Plutonium-241 has a half life of 14 years. Scientists use this fact to determine how long nuclear fuel will last. Suppose you have 100,000 grams of Plutonium-241 in a power plant. Determine how much Plutonium-241 will be remaining after each of the following numbers of years. Round to the nearest gram.

15. _______ years

16. _______ years

17. _______ years

18. _______ years