Sodium-24 is a radioactive isotope of sodium that is used to study circulatory dysfunction. assuming that 9 micrograms of sodium-24 are injected into a person, the amount A in micrograms remaining in that person after t hours is given by the equation A=9e with a exponent of -0.046t. A) graph the equation B) what amount of sodium-24 remains after 5 hours? Round your answer to two decimal places. ________ C) what is the half life of sodium-24? _______h D) In how many hours will the amount of sodium-24 be 1 microgram? _________h PLEASE CIRCLE OR HIGHLIGHT THE ANSWERS