Incremental analysis calculations and depreciation calculations. And any other calculations. Tax treatment. Pros of buying new truck

Another investment Sheila is considering is a new work truck. Her old Chevy is expected to last another three years with a $2,000 repair next month. Alternatively, Sheila can sell the truck as is for $3,000 (worthless after three more years of use) and buy a used F150 for $9,000 (expected value of $3,000 at the end of three years). The new truck would be more efficient, saving Sheila an average of $100 per month on repair and fuel costs. Sheila believes she can borrow money for the new truck at an annual rate of 5%. Sheila is wondering what the pros and cons of switching trucks are, and if she should upgrade. She also wants advice on the accounting and tax treatment of a truck