Use the following information for the next two (2) questions: As part of a cost study, the cost accountant of Shinly Corporation has recorded the cost of operations at seven different levels of materials usage. The cords show the following: Kilos of materials 80 60 20 120 140 40 100 Costs of operations P 800 480 320 1,200 1,280 480 Sum of the kilos (x) Sum of the costs (y) Sum of the kilos multiplied by the cost (xy) Sum of the kilos squared (x2) 560 P5,600 | P565,600 1,040 56,000 1) Using the high and low points method, the cost formula may be expressed as: