Retsac Company is considering an investment of $20,000 in an automated teaching robot. Retsac's cost of capital is 6%. Retsac anticipates the following net cash inflows from the teaching robot:

Year 1$5,000

Year 2$8,000

Year 3$14,000

Year 4$14,000

1.Calculate the cash payback period for the teaching robot. Show your work. Type your answer.

2.Calculate the net present value for the teaching robot. Use the appropriate table. Show your work, Type your answer.