What is the payback period on the proposed phone app for a favorite sports team? The estimated cash flows appear below. (note: payback is in years; round to 2 decimals) Year 0 cash flow =91,000 Year 1 cash flow =25,000 Year 2 cash flow =49,000 Year 3 cash flow =64,000 Year 4 cash flow =51,000 Year 5 cash flow =46,000 Year 6 cash flow =51,000