Exercise D2-10 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 In January of this year she had to replace the outdated autoclave equipment she inherited from the previous dentist.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 Month anuary Februany March April May June uly August Total autoclave cost 600 500 700 900 800 1,000 1,200 1,100 $7,400 6,500 7,000 9,000 7,600 8,500 10,000 9,800 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 $