Blue Company's activity for the first six months of the current year is as follows: (20 points) January February March April May June Machine Hours 2,000 4,500 2,400 1,600 1,500 2,100 Electrical Cost $3,000 6,500 4,000 2.400 2,500 3,500 INSTRUCTIONS: a) Using the high-low method, what is the variable cost per machine hour? (6 points) b) Using the high-low method, what is the fixed portion of the electrical cost each month? (5 points) c) What would be the expected total electrical costs if the month of July was anticipated to use 3,000 machine hours? (5 points) d) What would be the expected total electrical costs if the month of August was anticipated to use 6,000 machine hours? Briefly explain your answer. (4 points)