Hi, I am having problems with the following questions!

Inventory 1. Topeka tool Works reports the monthly values for its inventory and cost of goods sold for the most recent twelve months as follow: Month January February March April May June Inventory ($ 000) 1550 1850 1300 1400 2000 1650 Cost of Goods Sold ($ 000) 1225 2150 1550 975 1350 1550 Month July August September October November December Inventory ($ 000) 1250 1400 1700 1800 1200 900 Cost of Goods Sold ($ 000) 1100 1150 1700 1350 1400 1000 Calculate the company's inventory turnover. 2. A company uses ABC analysis to help manage its inventory. Its current stock of inventory reflects the following items, item value, and quantity. Which items would you classify as A items? As B items? As C items? Item Part # Item Price Quantity In Stock 142-AZ 4392-GF 86935-ES 173-DC 999-BA 7846-NM 2765-OP 103-VX 2648-YT $546.00 $45.00 $15.35 $653.00 $199.00 $23.00 $385.00 $12.50 $16.75 318 1250 3546 1876 526 973 790 4875 5185 3. Compute the total annualized inventory holding and ordering costs when the cost per order (S) is $75, the annual demand (D) is 120,000, the annual carrying charge (i) is 25%, the order quantity (Q) is 1200, and the item's cost is $50. 4. A coffee shop uses approximately 250 pounds of a particular type of coffee every week. The shop is open 52 weeks a year. The annual carrying charge for the coffee is 20%. If 1 pound of coffee costs the shop $12.00 and the cost associated with each order is $39, how many pounds of this coffee should be ordered each time an order is placed in the shop wants to minimize its total annualized inventory-related costs? 5. The following quantity discount is offered to a company that purchases 120,000 units of the product annually. Order Quantity Price per Unit 0-1999 $50 2000-3999 $49 4000 or more $46 Each time an order is placed, the company incurs a cost of $75. If the company's carrying charge is 25% of the price of the item, what order quantity should it use to minimize its total inventory-related costs? 6. Dayton Electronics demands a part at a daily rate of 40 units. The lead time for replenishment is four days for this item. The standard deviation of demand during the lead time is 8. Dayton Electronics prides itself on having a high level of customer service and strives to achieve a service level of 99%. How much safety stock should Dayton Electronics hold for this item