Can someone please help me with these topics by providing:

• Example, formula (if necessary), and definition.

\begin{tabular}{|l|l|l|} \hline 38 & Average-cost periodic & \\ \hline 39 & FIFO periodic & \\ \hline 40 & LIFO periodic & \\ \hline 41 & LIFO liquidation impact on NI & \\ \hline 42 & Dollar-value LIFO Yr 1 & \\ \hline 43 & Dollar-value LIFO Yr 2 & \\ \hline 44 & Dollar-value LIFO Yr 3 & \\ \hline 45 & Dollar-value LIFO & \\ \hline \end{tabular}