Supplies originally cost $500, but only $150 worth of supplies were used this period. The adjusting entry would be none of these answers are correct debit Supplies, $350; credit Supplies Expense, $350. credit Supplies Expense, $150; credit Supplies, $150. debit Supplies Expense, $350; credit Supplies, $350. debit Supplies, $150; credit Supplies Expense, $150.