Calculate ROI (as a percentage) from the following data: Sales $1,000,000 Investment 500,000 Income 50,000 10% o 20% None of these answers. 15% What effect does depresiation have on net cash flow? Depreciation is subtracted from net income to calculate net cash flow. Depreciation is added to net income to calculate net cash flow. Depreciation does not change net income or net cash flow