The concentration of a toxin in a cell is increasing at a rate of 50e-2t mol/L/s, starting

The concentration of a toxin in a cell is increasing at a rate of 50e-2t μmol/L/s, starting from a concentration of 10 μmol/L. If the cell is poisoned when the concentration exceeds 30 μmol/L, could this cell survive?
Write pure-time differential equations to describe the above situations, find out what happens over the long term, and state whether the rule could be followed indefinitely.