I have to find the current ratio, average payment period, operating margin, total margin, return on net assets and cash flow to debt for 2012. I really need help, if you could tell me how to answer these I would really appreciate it.

a instructure-uploads.s3.amazonaws.com C 2012 2011 Cash Flows from Operating Activities: Cash received from patient services Cash paid to employees and suppliers Interest paid Interest earned $3.783 3,684) (16) $2,590 (2.541) (14) Net cash from operations $ 96 Cash Flows from Investing Activities: Purchase of property and equipment Securities purchases ($ 19) ($ 15) ($ 34) 2 Net cash from investing activities (5 60) Cash Flows from Financing Activities: Contributions 10 6 Repayment of long-term debt (13) 0 Net cash from financing activities $ 33 $ 41 $ 74 Net increase (decrease) in cash and equivalents 13 Cash and equivalents, beginning of year $28 $ 41 Cash and equivalents, end of year