Question

Until May 15, 2007, the New York Stock Exchange priced the value of a share of stock in eighths or fourths, such as $217/8| or at $167/4|. The change in value of a share of stock from day to day was also represented in eighths or fourths as a positive or negative number.
The table shows the change in value of a stock over two days.
Day Tuesday Wednesday
Change in value 13/8| −17/4|

Find the change in stock value on Wednesday and its opposite on a number line.
−17/4|, The opposite of the change in stock value on Wednesday is $17/4|.
15/4|, The opposite of the change in stock value on Wednesday is −$15/4|.
17/4|, The opposite of the change in stock value on Wednesday is −$17/4|.
−15/4|, The opposite of the change in stock value for Wednesday is $15/4|.

Answers

GPT-4o mini
To find the change in stock value on Wednesday, we start with the value given for the change, which is \( -\frac{17}{4} \).

Next, we need to find the opposite of the change in stock value. The opposite of a number is simply the negative of that number. Therefore, the opposite of \( -\frac{17}{4} \) is \( \frac{17}{4} \).

Now let's check the answer choices provided:

1. \( -\frac{17}{4} \): This is the change in stock value on Wednesday, not its opposite.
2. \( \frac{15}{4} \): This does not match our calculated opposite.
3. \( \frac{17}{4} \): This matches our calculated opposite.
4. \( -\frac{15}{4} \): This does not match our calculated opposite.

Thus, the correct answer is:

The change in stock value on Wednesday is \( -\frac{17}{4} \). The opposite of the change in stock value on Wednesday is \( \frac{17}{4} \).