blem 3 Before kerosene can be used as jet fuel federal regulations require that the pollutants in it be removed by passing the kerosene through clay Suppose that the clay is in a pipe and that each foot of the pipe will remove 20 of the pollutants that enter it a If Po is the initial number of pollutant and P x represents the quantity of pollutants left after z feet pipe derive an expression for P x Poez and assume that Po 1 Hint Find r b Graph the function and use it to explain what will happen the amount of pollutant in kerosene if we continue to increase the length of the pipe c Given the initial pollutant is Po 1 how long does the pipe need to be to insure that 50 of the pollutants have been eliminated