Harbor Images has collected the following cost data for various levels of activity: Month Images Created Total Cost August 5,200 $ 5,540 September 6,950 $ 6,160 October 7,300 $ 7,738 November 3,700 $ 4,930 a. Using the high-low method, determine the variable cost per image created and the total fixed cost. (Round your variable cost to 2 decimal places.) b. Estimate the total costs when 5,700 images are created. (Do not round your intermediate calculations.