Refer to the portions of the 2018 and 2019 balance sheets provided below. Calculate the change in net working capital during the year 2019. 2018 2019 2018 2019 Cash $410 $770 Notes Payable $510 $550 Accts. Receivable $1,290 $1,470 Accounts Payable $690 $830 Inventory $880 $950 Long Term Debt $1,180 $1,090 $1,810 $520 $1,380 $960