Please help me in those questions which relates to managerial accounting 2. Thank you and I am really appreciated for your help.

1) Cornell Green, process engineer, knows that the acceptance of a new process design will depend on its economic feasibility. The new process is designed to improve environmental performance. On the negative side, the process design requires new equipment and an infusion of working capital. The equipment will cost $300,000, and its cash operating expenses will total $60,000 per year. The equipment will last for seven years but will need a major overhaul costing $30,000 at the end of the fifth year. At the end of seven years, the equipment will be sold for $24,000. An increase in working capital totalling $30,000 will also be needed at the beginning. This will be recovered at the end of the seven years. On the positive side, Cornell estimates that the new process will save $135,000 per year in environmental costs (fines and cleanup costs avoided). The cost of capital is 10 percent. Required: 1. Prepare a schedule of cash flows for the proposed project. Assume that there are no income taxes. 2. Compute the NPV of the project. Should the new process design be accepted? 2) Smokey Thomas, owner of Steam Whistle Company, was approached by a local dealer of air- conditioning units. The dealer proposed replacing Stream Whistle's old cooling system with a modern, more efficient system. The cost of the new system was quoted at $96,660, but it would save $20,000 per year in energy costs. The estimated life of the new system is 10 years, with no salvage value expected. Excited over the possibility of saving $20,000 per year and having a more reliable unit, Smokey requested an analysis of the project's economic viability. All capital projects are required to earn at least the firm's cost of capital, which is 10 percent. There are no income taxes. Required: 1. Calculate the project's IRR. Should the company acquire the new cooling system? 2. Suppose that energy savings are less than claimed. Calculate the minimum annual cash savings that must be realized for the project to earn a rate equal to the firm's cost of capital. 3. Suppose that the life of the new system is overestimated by two years. Repeat Requirements 1 and 2 under this assumption. 4. Explain the implications of the answers from Requirements 1, 2, and 3. 3) Dr. Julie Aardvark, a plastic surgeon, had just returned from a conference in which she learned of a new surgical procedure for removing wrinkles around eyes, reducing the time to perform the normal procedure by 50 percent. Given her patient-load pressures, Dr. Aardvark is excited to try out the new technique. By decreasing the time spent on eye treatments or procedures, she can increase her total revenues by performing more services within a work period. Unfortunately, in order to implement the new procedure, special equipment costing $74,000 is needed. The equipment has an expected life of four years, with a salvage value of $6,000. Dr. Aardvark estimates that her cash revenues will increase by the following amounts: Year Revenue Increases 1 2 3 4 $19,800 27,000 32,400 32,400 She also expects additional cash expenses amounting to $3,000 per year. The cost of capital is 12 percent. Assume that there are no income taxes. Required: 1. Compute the payback period for the new equipment. 2. Compute the ARR. 3. Compute the NPV and IRR for the project. Should Dr. Aardvark purchase the new equipment? Should she be concerned about payback or the ARR in making this decision? 4. Before finalizing her decision, Dr. Aardvark decided to call two plastic surgeons who have been using the new procedure for the past six months. The conversations revealed a somewhat less glowing report than she received at the conference. The new procedure reduced the time required by about 25 percent rather than the advertised 50 percent. Dr. Aardvark estimated that the net operating cash flows of the procedure would be cut by one-third because of the extra time and cost involved (salvage value would be unaffected). Using this information, re-compute the NPV of the project. What would you now recommend