Problems $6-10$ Determining profitability $($LO$6-4)$

Nucor Corporation produces steel and steel products at its eight mills and is a major recycler of scrap metal. The following data relate to Nucor for four year's. In $2017,$ Nucor's net income was higher by $$175\mathrm{.}2$ million because of a one$-$time effect of the Tax Cuts and Jobs Act.

$\backslash$table$[[$Nucor Corporation,,,,$],[($$ in millions$),2015,2016,2017,2018],[$Total assets,$$14,327\mathrm{.}0,$$$15,223\mathrm{.}5,$$$15,841\mathrm{.}3,$$$17,920\mathrm{.}6$