13. An investment promises to pay $3,000 per year for the first three years (first payment to be received exactly one year from today), $5,000 per year for the next four years after that, and $8,000 per year for the next five years after that. If you require a 15% return. Then you are willing to pay $_____ for these cash flows. Can you PLEASE show me how to calculate this using BA II Plus Texas Instruments? Thank you!