Exercise 2-10 After graduating from dental school two years ago, Dr. Lauren Farish purchased the dental practice of a long-time dentist who was retiring. In January of this year she had to replace the outdated autoclave equipment she inherited from the previous dentist. Now, as she is preparing her budget for next year, she is concerned about understanding how her cost for sterilizing her dental instruments has changed. She has gathered the following information from her records: Number of instruments used 696 Month January February March April 596 796 996 896 1,096 1,296 Total autoclave cost $ 7,478 6,562 7,198 9,080 7,646 8,626 10,138 9,936 May June July August 1,196 Using the high-low method, what is the variable cost of sterilizing an instrument using the new equipment? (Round answer to 2 decimal places, e.g. 52.75.) Variable cost $ per instrument What is the fixed cost of the autoclave equipment? (Round answer to 0 decimal places, e.g. 5,275.) Fixed cost $ What is the cost formula that Dr. Farish should use for estimating autoclave sterilization costs for next year's budget? Formula of total cost If Dr. Farish estimates she will use 1,171 instruments next month, what cost should she include in her budget for instrument sterilization? (Round answer to O decimal places, e.g. 5,275.) Total cost $