Canyon Dental Services is a specialized dental practice whose only service is filling cavities. Canyon has recorded the following for the past nine months: Number of Cavities Month Filled Total Cost January 600 $ 6,150 February 375 5,250 March 560 5,850 April 675 6,500 May 525 6, 100 June 550 #5, 950 July 625 6,060 August 300 5,000 September 325 5,000 Required: 1. Use the high-low method to estimate total fixed cost and variable cost per cavity filled. 2. Using these estimates, calculate Canyon's total cost for filling 750 cavities