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 January Filled Total Cost 300 $ 5,000 February 650 6,050 March 325 5,200 April 475 5,750 May 550 6,050 June 575 6,200 July 600 6,250 August 350 5,100 September 700 6,600 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 450 cavities.