Please help with these problems

a) Project L requires an initial outlay at t = 0 of $50,000, its expected cash inflows are $14,000 per year for 9 years, and its WACC is 11%. What is the project's MIRR? Do not round intermediate calculations. Round your answer to two decimal places.

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b) Project L requires an initial outlay at t = 0 of $68,510, its expected cash inflows are $14,000 per year for 8 years, and its WACC is 10%. What is the project's IRR? Round your answer to two decimal places.

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c) Project L requires an initial outlay at t = 0 of $60,000, its expected cash inflows are $14,000 per year for 9 years, and its WACC is 13%. What is the project's discounted payback? Do not round intermediate calculations. Round your answer to two decimal places.

years