23. Felix &Co., reports the following information about its unit sales and cost of sales. a. Draw an estimated line of cost behavior using a scatter diagram and compute fixed costs and variable cost per unit sold. b. Then use the high-low method to estimate the fixed and variable components of cost of sales. Period ovou Awn Unit sales 0 400 800 1,200 1,600 2,000 2,400 2,800 3,200 3,600 Cost of sales $2,500 3,100 3,700 4,300 4,900 5,500 6,100 6.700 7,300 7,900