What is the NPV of the following cashflow stream? The interest rate is 3.3%. Year [O]: $-84 Year 2: $26 Year 8: $93 Year 10: $2 What is the payback period (in annual terms of the following cashflow stream? Year O: $-458 Year 4: $605 Year 8: $-535 Year 10: $597 Year 16: $921 Year 18: $674