The pacific halibut fishery has been modeled by the differential equation dy/dt= ky(1 - y/m) where y(t) is the biomass (the total mass of the members of the population) in kilograms at time t (measured in years), the carrying capacity is estimated to be m = 7 times 107 kg, and k = 0.78 per year. if y(0) = 2 times 107 kg, find the biomass a year later. (round your answer to two decimal places.) times 107 kg how long will it take for the biomass to reach 4 times 107 kg?