answer all 3 please!

10. Calculate the IRR of a machine which is bought for $10,000; $2,000, and produces the following cash flows: year +$1,350; year 4)+$1,500; years 510 each +$500. 11. Calculate the IRR of a machine which is bought for $14,000, sold at the end of year for $3,500, and produces the following cash flows: year 1)+$700; year 2) +$1,600; year 3) +$1,250; year 4)+$2,400; years 57each)+$1,800 12. Calculate the IRR of a machine which is bought for $51,000, sold at the end of year for $21,500, and produces the following cash flows: year 1)+$1,700; year 2)+$6,100; year 31 +$00; year 4)+$4,100; years 58 each )+3,100