$2-$a$.$ By what amount did working capital change?

$($ Answer is complete but not entirely correct.

$2-$b$.$ What was the percentage change in the income tax rate? $($Round intermedlate calculations and final answer to $2$ decimal

places.$)$

$$ Answer is complete but not entirely correct.

$\backslash$table$[[$Percentage change,$0\mathrm{.}00x|\%,$increase$]]$

$0\mathrm{.}00$

$2-$c$.$ What was the amount of cash collectlons from customers in year $2?$

$($ Answer is complete but not entirely correct.

$\backslash$table$[[$Amount of cash inflow,$ $($Please answer the question that I got wrong. $*$the $()$ numbers mean there negative$)$