Exhibit $13-1$

$\backslash$table$[[(1),(2),(3),(4)],[\backslash$table$[[$Units of$],[$Factor X$]],\backslash$table$[[$Quantity of$],[$Output$]],\backslash$table$[[$Product$],[$Price$]],\backslash$table$[[$Marginal Revenue$],[$Product$]]],[0,10,$$$5,],[1,19,$$$5,A_{?}$