plz solve the 2 questions in problem4

Problem 4. (6 pts) Cases when Multiple IRRs exist. We consider an investment which generates, at the end of each year, the cashflows shown in Table 1: Table 1: Cashflow of the project Date 0 1 23 Flow -100 430 -592 264 1. (2 pts) Determine the NPV of this project for a discount rate r = 1. 2. (4 pts) Determine all possible IRR values. (keep two significant figures)