Juan analyzes the amount of radioactive material remaining in a medical waste container over time. He writes the function f(x)=10(0. 98)x to represent the amount of radioactive material that will remain after x hours in the container. Rounded to the nearest tenth, how much radioactive material will remain after 10 hours? 0. 8 units 1. 3 units 8. 2 units 9. 8 units.