how do you solve and waht formulas do you use?

17) Given the following: OCF=$20;NWC= minus $5;NFA=$10; Latest depreciation expense =$5i How much does this company have available to send to its investors? [\$10] 18)Assume the following: For year 1, Gross Fixed Assets =$2,000; Accumulated Depreciation = $500. For year 2, Gross Fixed Assets =$2,200; Depreciation Expense =$100. What is NCS in year 2?[+$200]