Peng Company is considering an investment expected to generate an average net income after taxes of $2,800 for three years. The investment costs $57,000 and has an estimated $9,600 salvage value. Assume Peng requires a 10% return on its investments. Compute the net present value of this investment. Assume the company uses straight-line depreciation. (PV of \$1. FV of \$1. PVA of \$1, and FVA of \$1) (Use appropriate factor(s) from the tables provided. Negative amounts should be indicated by a minus sign.)