Problem of the Week
Problem B
Double Trouble
Riley Waters has decided to join Facebook. A week after posting his profile,
he discovers he has two friends! After another week, his number of friends has
doubled to four. At the end of the third week, his total number of friends has
doubled yet again to 8.
a) If his number of friends continue to double each week, how many friends will Riley have at the end of 6 weeks? Create a T-chart to show your calculations.
b) Continue your chart to show how many friends
Riley would have after 10 weeks.
c) How long would it be until Riley has more than
15 000 friends?
d) There are about 34 million people in Canada. How
long will it be until Riley is friends with at least
that many people?
No comments:
Post a Comment
Note: Only a member of this blog may post a comment.