Scientists are conducting trials on a new disinfectant for use in hospitals and doctor's offices. After conducting several trials, they found that it decreases the presence of bacteria by 35% each second that it is applied to a surface. The next trial will apply it on a desk surface with
approximately 20000 cells of bacteria on it.
which logarithmic function models the time 1). In seconds it will take the number of cells to decrease to a value of n?