Answer: Gross profit margin.
Step-by-step explanation:
Break-Even Analysis enables a business to know how much cash it has under given situations by helping it know how much sales it needs in order to have a certain amount of cash.
It is calculated by the formula;
(Operating Expenses + Annual Debt Service)/Gross Profit Margin = Break-Even Sales
Operating Expenses in this equation is net of Depreciation as depreciation is a non-cash expense.