Question 5 Time: 33 minutes Total: 20 marks Below are the processing costs of Darnell Products observed over the last 10 months: Month Units Produced Processing Cat 7.500 544.000 11.000 14.500 59,210 S600 30.000 2.000 47.000 16 59.00 3.500 25,000 15 000 21.00 11.300 lio 6.000 a- Use the high low method to determine the variable cost per unit and fixed cost per month. Express your results in the form of a linear equation y = a + bx. (15 marks) b- Predict the total processing cost if 15,000 units are produced