Please show the formulas and your work. Thanks!

The Frisbee Baking Division of Block C Enterprises bakes and sells pies at the rate of 275 per day, 300 days per year. The ordering cost for the pie baking shells is $70, the holding cost for these shells is estimated to be $0.05 annually. Pie shells are available at the following prices Order size Cost $0.16 $0.14 $0.12 $0.10 $0.08 1 to 10000 10001 to 15000 15001 to 20000 20001 to 25000 25001 and above Calculate the annual ordering cost for these shells