Cost =$1,725,000+$125X, where X= Number of Heart Stents. Last year, Alisha produced 59,000 stents. Actual maintenance costs for the year were as expected. Required: If required, round your answers to the nearest cent. 1. What is the total maintenance cost incurred by Alisha last year? $ 2. What is the total fixed maintenance cost incurred by Alisha last year? $ 3. What is the total variable maintenance cost incurred by Alisha last year? $ 4. What is the maintenance cost per unit produced? $ per unit 5. What is the fixed maintenance cost per unit? $ per unit 6. What is the variable maintenance cost per unit? $ per unit 7. Alisha management could improve its cost function to better understand past maintenance costs and predict future maintenance costs by