A quality control department found four out of 80 staplers were defective. If 600 staplers are produced per day, how many can be expected to be defective?
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Rewrite the hyperbolic equation 4y^2 -9x^2 +54x-8y-113=0

The late fee for library books is $2.00 plus 15¢ each day for a book that is late. if maria’s fee for a late book was $3.20, write and solve a linear equation to find how many days late the book was.

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