Hello. Please answer each question in full detail. Thanks in advance

4. A firm is evaluating two projects X and Z. Project X has an initial investment of $80,000 and cash inflows at the end of each of the next five years of $25,000. Project Z has a initial investment of $120,000 and cash inflows at the end of each of the next five years of $40,000. Assume the cost of capital of 10%. Which project(s) should the firm accept if a) projects X and Z are independent? b) projects X and Z are mutually exclusive? s. A firm is evaluating a proposal which has an initial investment of S60,000 and has cash flows of $16,000 per year for five years. Calculate the payback period of the project. If the firm's maximum acceptable payback period is 3 years, should the firm accept the project