A culture of bacteria has an initial population of 420 bacteria and doubles every 5 hours. Using the formula P_t = P_0\cdot 2^{\
frac{t}{d}}P t =P 0 ⋅2 d t , where P_tP t is the population after t hours, P_0P 0 is the initial population, t is the time in hours and d is the doubling time, what is the population of bacteria in the culture after 9 hours, to the nearest whole number?
