Russell Preston delivers parts for several local auto parts stores. He charges clients $0.75 per mile driven. Russell has determined that If he drives 2,000 miles in a month, his average operating cost is $0.55 per mile. If he drives 4,000 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 $600+ $0.45 per mile. Required: 1. Determine how many miles Russell needs to drive to break even. 2. Assume Russell drove 2,300 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 $1,200 in profit. 4-a. Prepare a contribution margin income statement assuming Russell drove 2,300 miles last month. 4-b. Use the information provided in Req da to calculate Russell's degree of operating leverage. Complete this question by entering your answers in the tabs below. Req 1 Req 2 Req 3 Req 4A Req 4B Determine how many miles Russell needs to drive to break even. Break-Even Miles Miles Reg 1 Req 2 >