PROBLEM 12 (14 pts.) Woody Planer is the owner of Woody's Woodworking, a business that manufactures doors. During July, Woody produced and sold 800 doors. The business had total costs of $45,000 that month, of which $32,400 were variable costs. Show calculations in answering (a) through (d). a) What were Woody's fixed costs for July? b) What was Woody's variable cost per door? c) What was Woody's average cost per door? d) What would be Woody's expected costs be in a month where he produced and sold 900 doors