Sunk cost is a cost that has already been incurred and cannot be recovered. It is therefore not included in cash flow analysis, which focuses on future cash flows.

The formula for calculating the present value of a single cash flow is PV = CF / (1 + r)^n, where PV is the present value, CF is the cash flow, r is the discount rate, and n is the number of years.

The payback period is not a method for evaluating capital budgeting projects because it does not consider the time value of money.

The formula for calculating the internal rate of return (IRR) of a project is IRR = (CF1 * (1 + r)^n + CF2 * (1 + r)^(n-1) + ... + CFn) / (Initial investment), where CF1, CF2, ..., CFn are the cash flows in each year, r is the discount rate, and n is the number of years.

Cost-benefit analysis can be complex and difficult to understand and implement, especially for large and complex projects.

The formula for calculating the benefit-cost ratio (BCR) of a project is BCR = (Total benefits) / (Total costs), where total benefits are the sum of all benefits over the life of the project and total costs are the sum of all costs over the life of the project.

Sensitivity analysis is a technique used to assess the impact of changes in input parameters on the results of a cost-benefit analysis. It is not a type of cost-benefit analysis itself.

An annuity is a series of equal cash flows that occur at regular intervals for a finite period of time, while a perpetuity is a series of equal cash flows that occur at regular intervals forever.

The formula for calculating the present value of an annuity is PV = CF * [(1 - (1 + r)^-n) / r], where PV is the present value, CF is the cash flow, r is the discount rate, and n is the number of years.

Annuity depreciation is not a type of depreciation. The three main types of depreciation are straight-line depreciation, declining-balance depreciation, and sum-of-the-years'-digits depreciation.

The formula for calculating the annual depreciation expense using the straight-line method is Depreciation expense = (Initial cost - Salvage value) / Useful life, where initial cost is the cost of the asset, salvage value is the estimated value of the asset at the end of its useful life, and useful life is the number of years the asset is expected to be used.

Depreciation is not a factor that affects the cost of capital. The three main factors that affect the cost of capital are risk, inflation, and taxes.

The formula for calculating the weighted average cost of capital (WACC) is WACC = (Cost of debt * Debt ratio) + (Cost of equity * Equity ratio), where cost of debt is the interest rate on the company's debt, debt ratio is the proportion of the company's capital structure that is debt, cost of equity is the required rate of return on the company's equity, and equity ratio is the proportion of the company's capital structure that is equity.

The statement of retained earnings is not a type of financial statement. The three main types of financial statements are the balance sheet, the income statement, and the statement of cash flows.

The purpose of a balance sheet is to show the company's financial position at a specific point in time. It shows the company's assets, liabilities, and equity.