Question 4 A tank initially contains 90 kg of salt dissolved in 2000 L of water. A solution with concentration 0.0225 kg of salt per L of water begins entering the tank at the rate 8 L per hour. The solution is continually mixed (so that the concentration of salt is roughly uniform throughout the tank) and drains from the tank at the same rate that it enters. If y is the amount of salt (in kg) in the tank after t hours, a differential equation that models this situation is: dy d.t and the initial condition for this differential equation is: y(0) = Submit Question 10:17 PM 3/2/2023 hp 16 % A & 2 4 15 8