Ritter Corporations accountants prepared the following financial statements for year-end 2019: (Do not round intermediate calculations.)

RITTER CORPORATION
Income Statement
2019
Revenue	$	920
Expenses		650
Depreciation		107
Net income	$	163
Dividends	$	143

RITTER CORPORATION
Balance Sheets
December 31
		2018			2019
Assets
Cash	$	72		$	99
Other current assets		182			204
Net fixed assets		387			407
Total assets	$	641		$	710
Liabilities and Equity
Accounts payable	$	132		$	159
Long-term debt		157			179
Stockholders equity		352			372
Total liabilities and equity	$	641		$	710

a.	What is the change in cash during 2019?

b.	Determine the change in net working capital in 2019.

c.	Determine the cash flow generated by the firms assets during 2019.