Determine the missing amounts in each of these four separate situations a through d.

	a	b	c	d
Supplies availableprior year-end	$625	$3,313	$2,816
Add: Supplies purchased during the current year	4,375	11,264		11,864
Total supplies available	5,000	14,577
Less: Supplies availablecurrent year-end	1,075		3,296	800
Supplies expense for the current year		3,013	22,296	12,439