Book & Bible Bookstore desires to buy a new coding machine to help control book inventories. The machine sells for $36,586 and requires working capital of $4,000. Its estimated useful life is five years and will have a salvage value of $4,000. Recovery of working capital will be $4,000 at the end of its useful life. Annual cash savings from purchase of the machine will be $10,000. a. Compute the net present value at a 14% required rate of return. b. Compute the internal rate of return. c. Determine the payback period of the investment