\f5. Krypton-35 is an inert radioactive noble gas with a ha lf-life of approximately litir'E years. a. Write an exponential function to model this situation and dene each variable. {1 mark] h. Determine what fraction of a sample of Krypton-35 will remain after SEDS years. State the answer as an exact fraction value. {1 mark] c. Determine how long will it take for a sample of Krypton-35 to decay to HIS-ll of its original mass. Round your answer to the nearest hundredth of a year.[1 mark}