8. The book fair had a sale where 6 books were $20.46. If you wanted to buy 7 books, how much money would you need?
2 answers:
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One way is that you can just factor it out: (x+2)(x+2)(x+2)
For the first pair, you get
.
Then do
*
That will be
So the answer is 6
For the first pair, you get
Then do
That will be
So the answer is 6
