From the integrated rate law for a first order reaction, $ [A] = [A]_0\; e^{-kt}$. Suppose rate constant, $k = 2.95 X 10^{-3} s^{-1}$, What percent of $A$ remains after $150 \;s$?

Question

$\begin{array}{1 1} 64\% \\ 32\% \\ 16 \% \\ 48\% \end{array}$