11 3 Points Plutonium-238 Is A Radioactive Element That Is Used In Nuclear Power Plants And Other Devices That Produce Electricity. When It Gives Off Radiation, The Amount Of Plutonium Decreases. This Decrease Can Be Expressed By Using An Exponential Decay Model. Imagine That We Start With 100 Grams Of Plutonium-238. The Graph Below Shows The Amount Of

 

11 3 points Plutonium-238 is a radioactive element that is used in nuclear power plants and other devices that produce electricity. When it gives off radiation, the amount of plutonium decreases. This decrease can be expressed by using an exponential decay model. Imagine that we start with 100 grams of plutonium-238. The graph below shows the amount of plutonium-238 that remains after a number of years. Approximately how many years later would the remaining amount of plutonium decrease to 20 grams? (grams) 100 10 80 69 ount of plutonium remaining 22 60 Show all