Doctors use radioactive iodine as a tracer in diagnosing certain thyroid gland disorders. This type of iodine decays in such a way that the mass remaining after t days is given by the function m(t) = ge-0.087t where m(t) is measured in grams. (a) Find the mass at time f = 0. grams (b) How much of the mass remains after 6 days? (Round your answer to three decimal places.) grams