The class is about Electricity and Magnetism. The website wants exactly the perfect answer and in the same metric system units that are stated on the calculators that are on the picture for the question, if not, it'll mark it wrong.

Pacemaker A heart pacemaker is designed to operate at 72 beatsimin using a 4.2 "F capacitor in a simple RC circuit. What value of resistance should be used if the pacemaker is to re [capacitor discharge) when the voltage reaches 57.6 percent of the maximum? ~Equation 26-513 should be helpful