A population of 350 bacteria is introduced into a culture and grows in number according to the equation P(t) = 350(1 + 6t 60 + t2) where t is measured in hours. Find the rate at which the population is growing when t = 4. Round your answer to two decimal places. 16.00 bacteria per hour 125.07 bacteria per hour 28.71 bacteria per hour 27.63 bacteria per hour 32.81 bacteria per hour