AM Express Inc. is considering the purchase of an additional delivery vehicle for $42,000 on January 1,20Y1. The truck is expected to have a 5 -year life with an expected residual value of $7,000 at the end of 5 years. The expected additional revenues from the added delivery capacity are anticipated to be $64,000 per year for each of the next 5 years. A driver will cost $44,000 in 20Y1, with an expected annual salary increase of $4,000 for each year thereafter. The annual operating costs for the truck are estimated to be $2,000 per year. a. Determine the expected annual net cash flows from the delivery truck investment for 20Y1-20Y5. b. Compute the net present value of the investment, assuming that the minimum desired rate of return is 12%. Use the table of the present value of $1 presented above. When required, round to the nearest dollar. If required, use the minus sign to indicate a negative net present value