Need help interpreting a basic circuit question
Yes, it is a calculus question.  To undo the derivative, you need to take an integral.  This can be done by hand, or using an online tool like Wolfram Alpha:

\$\int_0^{\infty} 10 e^{-2000 t} \text{A} dt = 0.005 \;\text{A}\cdot\text{s} = 5000 \;\text{µC}\$