The graph below represents the decay in the mass of a sample of Uranium Which expression can be used to represent the mass of the sample for any specific year What is the mass of the Uranium after five years mass in grams 60 40 0 78 1 39 20 2 19 5 3 9 75 of years This image cannot be easily described If you need an explanation of this image please ask your teacher for help O y 0 5x 78 80 5 grams O y 2x 78 88 grams O y 78 2 2496 grams