how am I able to answer these pom questions?

4- After tallying the receipts for their first year of operation, the owners of the Taco Barn are encouraged. Sales of their artisanal tacos, made from such exotic ingredients as ground beef, cheese, and beans, have been strong and seem to give hope to the coming year. Taco sales by month are shown in the table. _-.an- Inn | arch 501 _ O ctober 699 Armed only with his ngers, the owner decides that the safest forecasting approach is a weighted moving average using 0.8, and 0.2 for the most recent two. Generate a forecast for the year using this technique and then calculate forecast errors using MAPD. What is the mean absolute percentage deviation for this forecasting approach? (10 points) 5- A manager has just received a revised price schedule from a vendor. What order quantity should the manager use in order to minimize total costs? Annual demand is 120 units, ordering cost is $10 per order, and annual carrying cost per unit is 10% of the unit price/cost. (20 points) $16 1 - 69 $13 70 or more $10