I need help to determine variable and fixed components of repair costs. I want to predict the repair expenses using the high-low method. I have a copy machine company and I want to know how to predict repair expenses when there are different levels of copies made.

If this is the information I have gathered for May through September then

Copy Machine

Month Repair Expense Copies Made

May $8,870 297,000

June $12,950 551,000

July $21,350 921,000

August $17,130 760,000

September $9,810 369,000

Using the copies made as the measure of activity how much does the variable component cost per copy?

And how much does the Fixed component cost per month?