The answer is also not -35083.78, please help

You work for an engineering company that needs a company car for your new site engineers. You can find a used pickup truck for $20000. You estimate that you can keep the truck for 8 years, and will then be able to salvage it for $3700. Annual costs for gas, oil, and other operational costs are $1900. You estimate repair costs to be $500 the first year and then grow at a 7% compound annual rate. The engineering company uses an interest rate of 7%. Question 1 Draw the cash flow diagram, and calculate present worth of cost (salvage is treated as a reduction in cost)