Consider the following data for Magnimus Corporation. Sales in units Sales revenue Direct materials Direct labour Manufacturing overhead Sales commission Other selling expenses Administrative expenses July 3,900 $ 429,000 77,610 89,895 61,980 25,350 44,720 36,550 August September 5,000 5,200 $ 550,000 $ 572,000 99,500 103,480 115,250 119,860 71,880 73,680 32,500 33,800 48,020 48,620 3 6,550 36,550 40 Required: Write the cost equation for administrative expenses. Y =