Russell Preston delivers parts for several local auto parts stores. He charges clients 0.90 per mile driven. Russell has determined that if he drives 2,100 miles in a month, his average operating cost is $0.60 per mile. If he drives 3,100 miles in a month, his average operating cost is $0.50 per mile. Russell has used the high-low method to determine that his monthly cost equation is: total cost = $1,220.00 + $0.29 per mile.

1. Determine how many miles Russell needs to drive to break even.

2. Assume Russell drove 2,500 miles last month. Without making any additional calculations, determine whether he earned a profit or a loss last month.

3.Determine how many miles Russell must drive to earn $2,135.00 in profit.

4. Prepare a contribution margin income statement assuming Russell drove 2,500 miles last month. (Enter your answers rounded to 2 decimal places.)

5. Use the above information to calculate Russells degree of operating leverage. (Round your answer to the 2 decimal places.)