Answer: Please see below
Explanation: The values from  the question are scattered, but here is how they should appear
                                                     Case A       Case B         Case C  
 Net income                               $310,000         15,000 $420,000    
 Depreciation expense                  40,000   150,000       80,000
 Accounts receivable increase 
(decrease                                      100,000 (200,000) (20,000) 
 Inventory increase (decrease)        (50,000)   35,000   50,000
Accounts payable increase           (50,000)   120,000   70,000
Accrued liabilities increase
 (decrease)                                  60,000  (220,000) (40,000)
To calculate the operating activities section of cash flows for each of the given cases, 
we use the Indirect method formula
Net cash flow from operating actvities  = Net Income + Non-Cash Expenses – Increase in Working Capital
Net cash flow from operating actvities =Net Income +/- Changes in Assets & Liabilities + Non-Cash Expenses
Net cash flow from operating actvities = Net Income + Depreciation + Stock Based Compensation + Deferred Tax + Other Non Cash Items – Increase in Accounts Receivable – Increase in Inventory + Increase in Accounts Payable + Increase in Accrued Expenses + Increase in Deferred Revenue
Following the formulae above, we can determine what expense should be added or subtracted to give the operating activities of cash flow below as 
                                   Case A                   Case B               Case C 
Net Income               $310,000                15,000         $420,000  
Net Income Adjustments to Reconcile Net Income to net Cash provided by operating activities 
Depreciation                   40,000              150,000       80,000
Changes in Assets and Liabilities 
Accounts Receivable        - 100,000       200,000           20,000
Inventory                              50,000           -35,000        - 50,000    
 Accounts Payable            -50,000            120,000       70,000
Accrued Liabilities              60,000           - 220,000       -40,000
Net Cash Provided by Operating Activities
                                       $310,000         $230,000       $500,000