6. When Joe recently graduated from the Trucking Academy, his father gave him a $350,000 tractor-trailer rig. Joe has been boasting to his friends about his income in relation to the salary they earn at a competing trucking rm. His revenues are $25,000 per month and his operating expenses (for fuel, maintenance, and depreciation) are $18,000. Rigs similar to his rent for $15,000 per month. ls Joe correct in boasting about the net cash flow of $7,000 that he is generating each month