Match the investment appraisal method with its formula:
Payback period ↔️ Initial Investment / Annual Cash Inflows
Accounting rate of return (ARR) ↔️ (Average Annual Profit / Initial Investment) * 100
Net present value (NPV) ↔️ Σ (Cash Flow / (1 + Discount Rate)^n) - Initial Investment
Internal rate of return (IRR) ↔️ Iterative calculation