Question 19 2 pts Which of the following is the total mixed cost equation for a factory where machine operating costs include $300,000 of machine depreciation per year, plus $70 of utility costs for each day the machinery is in operation? Y-$300,000+ $70X Y-300,000X Y = $70X O Y = $300,000 - $70X None of the answer choices is correct. Question 20 2 pts Which of the following represents total variable costs? OV OvX Of+vx of None of the answer choices is correct