What is the federal income tax owed by an investor in the 35% income tax bracket (15 % tax rate on long-term capital gains and dividend income)?

1. Bob - owns stock A that paid $350 in dividends and sold Stock B for a lont-term capital gain of $1200

2. Bill - sold stock A for a short-term capital gain of $3500 and sold Stock B for a short-term capital loss of $3100

3. Brian - sold stock A for a long-term capital gain of $3700 and sold Stock B for a long-term capital loss of $5100

4. Barbara sold stock A for $6000 short-term loss and sold stock B for a $2000 long-term gain

5. Roberta's savings account paid annual interest of $1000 and a stock that paid a dividend of $1000

PLEASE SHOW WORK