HELP with the last 3 on required 3

ada's Luxury Travel (LLT) is considering the purchase of two Hummer limousines. Various information about the proposed investment llows: Assume straight line depreciation method is used. Required: Help LLT evaluate this project by calculating each of the following: 1. Accounting rate of return. 2. Payback period. 3. Net present value. (Future Value of \$1.Present Value of \$1. Euture Value Annuity of \$1. Present Value Annuity of \$1.) Note: Use appropriate factor(s) from the tables provided. 4. Without making any calculations, determine whether the IRR is more or less than 15%