The value of a stock decreases by an average of 12 dollars each week. Which of the following represents the total average decrease in the stock after 4 weeks?
|−12| − 4 = 8 dollars
4|−12| = 48 dollars
|−12| − |4| = 8 dollars
−4|12| = 48 dollars
The question asks for the total decrease after 4 weeks. Since there is no such thing as negative weeks, A and C are disqualified. Since D is simply wrong math (-4x12=-48), it is also wrong.
