Jackson Incorporated manufactures medical stents for use in heart bypass surgery. Based on past experience, Jackson has found that its total maintenance costs can be represented by the following formula: Maintenance Cost - $1,500,000 + $350x, where x = Number of Heart Stents. Last year, Jackson produced 60,000 stents. Actual maintenance costs for the year were as expected. What is the total maintenance cost incurred by Jackson last year? $22,500,000 $1,750,000 $19,680,000 $21,000,000 Number of toys produced 60,000 120,000 150,000 Gibson Toys, Inc. Cost of Materials Total cost of materials $18,000 36,000 45,000 What is the materials cost per unit of output? $.70 $.30 $.50 $.20