Ziegler Inc. has decided to use the high-low method to estimate the total cost and the fixed and variable cost components of the total cost. The data for various levels of production are as follows: Units Produced Total Costs 990 2,040 2,790 $194,400 293,110 02,400 a. Determine the variable cost per unit and the total fixed cost. Variable cost: (Round to the nearest dollar.) Total fixed cost: b. Based on part (a), estimate the total cost for 1,360 units of production. Total cost for 1,360 units: per unit For a recent year, McDonald's Company-owned restaurants had the following sales and expenses (in millions): Sales Food and packaging Payroll Occupancy (rent, depreciation, etc.) General, selling, and administrative expenses $19,000 $6,050 4,800 4,780 2,800 $18,430 $570 Income from operations Assume that the variable costs consist of food and packaging, payroll, and 40% of the general, selling, and administrative expenses. a. What is McDonald's contribution margin? Round to the nearest million. (Give answer in millions of dollars.) million b. What is McDonald's contribution margin ratio? c. How much would income from operations increase if same-store sales increased by $1,100 million for the coming year, with no change in the contribution margin ratio or fixed costs? Round your answer to the closest million. million