Answer:
B, Seth lost $261 by selling stocks.
Step-by-step explanation:
Since the income is negative, it would only be logical that he would've lost money, since you can't make negative money.
When they say quotient, they want a fraction, so the answer for that would be

and the decimal form of that would be 0.6. You can get that from dividing 6 by 10 and solving with long division.
The answer is 1.
( x = 50)