please solve and explain

Question 1 2 pts S&L sells 360 bottles of a dietary supplement per week. The supplement is ordered from a supplier who charges S&L $20 per order and $40 per bottle. S&L's annual holding cost is 30% of the purchase cost. Currently, S&L orders 800 bottles at a time. Assume S&L operates 50 weeks in a year. What is the yearly demand (.e. D)? D Question 2 2 pts What is the total annual inventory cost (i.e. cost of holding and ordering) for S&L. for their current order size? Question 3 2 pts What order quantity minimizes Company S&L's total ordering and holding cost per year?(round to the nearest whole number) D Question 4 2 pts What is the annual total inventory cost (.e. cost of holding and ordering) for S&L, if it orders as per EOQ? (round to the nearest whole number) D Question 5 2 pts How many orders will be placed per year if S&L orders as per EOQ?(round to one decimal)