I have the answers I just want the explanation and if you could make it applicable to my TI-84 calculator that would be great. Ex TvM solver and shortcuts on the calculator to get these answers instead of long formulas

3. A project costs $475 and has cash flows of $100 for the first three years and $75 in each of the project's last five years. What is the payback period of the project? A) The project never pays back B) 4.75 years C) 5.00 years D) 5.33 years E) 6.00 years Suppose a firm invests $600 in a project. The initial cost is depreciated straight-line to zero over 3 years. Net income from the project is $100, $125 and S140 in each of the three years of the project's life. What is the average accounting return? A) 18.25% B) 20.28% C) 35.49% D) 40.56% E) 60.83% 4. Page 1 Suppose a project costs $300 and produces cash flows of $100 over each of the following six years. What is the IRR of the project? A) There is not enough information; a discount rate is required B) 10.0% C) 24.3% D) 34.9% E) 38.1% 5