Changes in stock prices on the Stock Exchange are written as positive or negative integers.
a) Express each change as an integer.
i) The value of Apple Computers increased by $2.
ii) Palm-Tech dropped from $25 to $22.
iii) MDS started the day at $13 and ended the day at $12.
iv) Steve bought Global stock at $10 and sold it for $15.
b) Look at the two stock prices in part a, ii.
How are the prices related?
c) Look at the two stock prices in part a, iv.
How are the prices related?
d) How can an integer be used to show the relationship between
two prices of a stock? Explain.