please identify the high low numbers in clear format thanks

After graduating from dental school two years ago, Dr. Maria Miller 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 In January of this year, she had to replace the outdated autoclave equipment she inherited from the previous dentist.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: Month Number of Instruments used Total autoclave cost January 850 $6,485 February 750 5,900 March 920 6,935 950 7.370 April 1.150 8.140 May 900 6.878 June 1.050 8.055 July 975 7.316 August Identify the high and low points. Activity Level High point $ Low point Using the high-low method, what is the variable cost of sterilizing an instrument using the new equipment? (Round answer to 2 decimal places, eg. 52.75.) $ per instrument Variable cost e Textbook and Media hip