i'm struggling with this question. I'm not sure where to start. Thank you !

RC circuit Using the following circuit, determine the time constant and make a plot of the current in the circuit as a function of time. Actually plot this, do not hand draw it. V =1V R=100 C = 10mF R 1+ V C a.) What is the energy stored in the capacitor when t = 57? b.) How much energy is dissipated by the Resistor as the Capacitor discharges? c.) What is the voltage across the resistor t = 17 as the capacitor discharges