Every chemical element goes through natural exponential decay, which means that over time its atoms fall apart. the speed of each element's decay is described by its half-life, which is the amount of time it takes for the number of radioactive atoms of this element to be reduced by half. the half-life of the isotope dubnium-263263263 is 292929 seconds. a sample of dubnium-263263263 was first measured to have 102410241024 atoms. after ttt seconds, there were only 323232 atoms of this isotope remaining. write an equation in terms of ttt that models the situation.