certain conditions, the number of diseased cells N(t) at time t increases at a rate N'(t) = A ek, where A is the rate of increase at time 0 (in y) and k is a constant. ppose A = 50, and at 5 days, the cells are growing at a rate of 250 per day. Find a formula for the number of cells after t days, given that 3 esent at t = 0. e your answer from part a to find the number of cells present after 11 days