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I ordered some books online for myself and friends.

Each book costs $13 and the store charges a flat rate for shipping of $20.
Write an expression for the cost of buying n books.
Answer:

I ordered some books online for myself and friends. Each book costs $13 and the store-example-1
User Shakara
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Each book costs $13, with a flat rate of $20.
Let books = b

13b + 20 is your expression, as you'll have to pay 20 no matter how much books you buy for shipping.

hope this helps :)
User John Chuckran
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