Radioactive decay can be described by the following equation lnA=lnA0kt where A0 is the original amount of the substance, A is the amount of the substance remaining after time t, and k is a constant that is characteristic of the substance. For the radioactive isotope iodine-131, k is 8.62102 days 1. If the original amount of lodine-131 in a sample is 59.8mg, how much iodine-131 remains after 8.60 days have passed? mg