lodine-123 is a radioactive isotope used in medicine to test the function of the thyroid gland. Its half-life is 13.1 hours. A 575-microcurie (uCi) dose of iodine-123 is administered to a patient. The quantity, Q, left in the body after t hours is given by the equation Q = 575 13.1 .Answer parts (a) through (d). (c) Determine the rate of change of the quantity of iodine-123 at 1 day. The rate of change of iodine-123 at 1 day Is -8.55 Ci/hr. (Type an integer or decimal rounded to two decimal places as needed.) (d) Determine the rate of change of the quantity of iodine-123 at 3 days. What do your answers say about the rate at which iodine decreases as time increases? The rate of change of iodine-123 at 3 days is Ci/hr. (Type an integer or decimal rounded to two decimal places as needed.) corr