2. A book store bought 160 copies of a book from the publisher for $4.000. If the store gives away 2 books, how much money will it lose?

50$

Step-by-step explanation:

If for

160 books, the publisher paid $4,000

for

1 book, the publisher pays $

4000

160

=

25

so

2 books, the bookshop pays $

25

⋅

2

=

$

50

Therefore if the store gave away 2 books it would lose 50$

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step-by-step explanation:

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exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.