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Find the payback period for a project that has an initial cost of $30,000 and yields revenue of $5,000 at the end of year 1, $8,000 at the end of year 2, $12,000 at the end of year 3, $7,000 at the end of year 4 and $12,000 at the end of year 5. Should the company accept the project if management's payback period threshold is 3.5 years