can someone help me answer this questions with good examples to understand it better ? :) please

1. A lab is trying to determine how many test kits it should order from its supplier. They use 780 kits per year. The annual holding cost is $3 per kit per year. The ordering cost is $15 per order. The supplier delivers their orders all at one time, but offers a quantity discount. What is the optimum condition (order quantity) and total cost (ordering, holding and item cost)? Draw the Order quantity (Q) verses Total Annual Cost graph with 3 item prices (as shown in Figure 12.7 of the textbook). Quantity SPrice 1-72 73-144 56 145 and more 53 2. A city wants to promote annual marathon event by ordering and selling T-shirts. Sales price is $12.95, Cost is $5.00, and Salvage value is $0.50. From previous years' sales history the following data is available. Setup the payoff table with expected profit. How many T-shirts should they order and stock? Demand Probability 75,000 80,000 20% 85.000 25% 90.000 3094 95.000 204