working on capital budgeting:

Supplying missing data: Fill in the blanks for each of the following independent projects. Assume in all cases the project has a useful life of 10 years.

Can I please get guidance to understand how to answer the questions and instructions to solve the answers using a financial calculator?

Project 2 Annual cash inflow: $70,000 initial investment: ? cost of capital: 14% IRR: 20% NPV?

Project 3 Annual cash inflow: ? initial investment: $200,000 cost of capital:? IRR: 14% NPV: $35,624

Project 4 Annual cash inflow:? initial investment: $300,000 cost of capital: 12% IRR? NPV: $39,000