A product has the following gross requirements. PLEASE EXPLAIN TO ME HOW TF DID THEY GET THIS ANSWER IN DETAIL I AM SO CONFUSED I DONT KNOW HOW TO DO ANYTHING BRB CRYING 

Week	1	2	3	4	5	6	7
Requirements	30	30	40	0	20	50	40

The beginning inventory is 20. The usage pattern is expected to continue for the remainder of the year. What is the total inventory cost (for 7 weeks) if POQ lot-sizing is used? Assume that setup cost is $300 and holding cost per unit per week is $2.2.

Item J	0	1	2	3	4	5	6
Gross Requirement
Scheduled receipt
On Hand Inv.
Net Requirement
Planned Order Receipt
Planned Order Release

Selected Answer:	[None Given]
Answers:	More than $1200
	between $1000 and $1200 THIS IS RIGHT ANSWER :( IDK HOW THEY GOT IT
	between $800 and $1000
	between $600 and $800
	Less than $400