Answer: a) 245 members
b) 4 dollars
Explanation:
a) If 7 new members were added each week, then after 35 weeks, the number of new members that would have been added =
7 members/week × 35 weeks = 245 members
Therefore the club's size changed (increased) by 245 members.
b) Number of shares owned by Mary from a certain stock = 7 shares
Decrease in the total value of her shares = 28 dollars
If 7 shares decreased by 28 dollars, then 1 share decreased by
28 ÷ 7 = 4 dollars
This means the value of each share changed (decreased) by 4 dollars.