Evana Blanca owns a construction firm that builds beautiful concrete walls with reinforced steel. Her holding costs are 40 s per year. Answer is complete but not entirely correct. (Round your answor to the nearest whole number.) Evana is charged $300 per delivery of steel rebar. Each rebar costs $250. a. She needs 150 rebars per week. How many rebars should she purchase 359x from the supplier with each ordor? (Round your answer to 2 decimal places.) Evana receives deliveries of 4,500 cinder blocks at a time. There is a fixed cost of $175 per cinder block dolivery. She needs 450 cinder blocks per day. b. Each cinder block costs $2, so she incurs holding cost of $0.80 to hold a cinder block in inventory for one year (i.e., 40% of \$2). What is Evana's total total ordering and holding costs (\$) per cinder block? (Round your answer to 2 decimal places.) Evana is offered a great deal on cinder blocks. If she were to order 40,000 blocks at a time, she would receive a 10 percent discount. Say she decides c. to switch to purchasing 40,000 cinder blocks with each order so that she can take advantage of the deal. What would be her average inventory holding cost (\$) per day? Note: Do not include ordering or purchasing costs