I've been stuck on this question for a while. Any help is appreciated!

Iggy Company is considering three capital expenditure projects. Relevant data for the projects are as follows. Annual income is constant over the life of the project. Each project is expected to have zero salvage value at the end of the project. Iggy Company uses the straight-line method of depreciation. Click here to view the factor table. (a) Determine the internal rate of return for each project. (Round answers 0 decimal places, e.g. 13\%. For calculation purposes, use 5 decimal places as displayed in the factor table provided.) Determine the internal rate of return for each project. (Round answers 0 decimal places, e.g. 13\%. For calculation purposes, use 5 decimal places as displayed in the factor table provided.) (b) If Iggy Company's required rate of return is 11%, which projects are acceptable? The following project(s) are acceptable