__6th POW__Thomas works for his dad. He was given the choice of:

a) Working for 25 days at $15.00 per day; or

b) Working for 25 days and doubling his wages every day, beginning with 1¢ the first day, 2¢ the second day, 4¢ the third day, 8¢ the fourth day, etc.

Which choice (a or b) will give Thomas the greater pay, and how much more pay will it be than the other choice?

__7th POW__A major computer company has just purchased the new operating system you created! You have so much money that you decide to give away $2,000,000. If you give $50 away every hour, how long will it take you to give away all $2,000,000?

__8th POW__Before the age of technology, the library was overflowing with books! Then, during one decade, each book was stored on microfiche. This new storage space was equal to the cube root of the old space. In the next decade, the microfiche were converted to diskettes. This new storage space was equal to the square root of the previous space. Finally, in this decade, each diskette has been changed over to a compact disc. The current space is about 23% of the previous space. If the current space is equal to 3 books, how many books were in the old library?