Looking for the equations I need to use to solve this not just the answers themselves. I already have the answers, I'm just confused on how to get to it.

Question 25 3 out of 10 points Henderson Furniture sells reproductions of 18th century furniture. For a particular table, the assumptions of the inventory model with backorders 1% are valid. D = 200 tables per year I = 259% per year C = $800 per table Co = $80 per order Cb = $50 per table per year The store is open 250 days a year. a. What is the value for order quantity/ b. What is the number of planned backorders that will minimize total cost? c. What is the maximum inventory? d. What is the cycle time? e. What is total cost