OF Question 9 4 1 41 PS Part 4 of 4 HW Score 86 03 24 95 of 29 points Points 0 75 of 1 e amount of plutonium remaining from 1 kilogram after x years is given by the function W x 2 How much will be left after 4000 years How much will be left after 9000 years How much will be left after 15 000 years Estimate how long it will take for the 1 kilogram to decay to half its original weight The amount of plutonium left after 4000 years is about 89 kilograms ound the final answer to two decimal places as needed Round all intermediate values to six decim needed The amount of plutonium left after 9000 years is about 77 kilograms und the final answer to two decimal places as needed Round all intermediate values to six decimal places as need The amount of plutonium left after 15 000 years is about 65 kilograms ound the final answer to two decimal places as needed Round all intermediate values to six decimal places as need The time it will take for the 1 kilogram to decay to half its original weight is years