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Mathematics, 27.02.2020 22:23 amandajbrewerdavis

Isobel is producing and selling cassette tapes of her rock band. When she had sold 10 tapes, her net profit was $11. When she had sold 20 tapes, however, her net profit had shrunk to $9 due to increased production expenses. But when she had sold 30 tapes, her net profit had rebounded to $13.

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Isobel is producing and selling cassette tapes of her rock band. When she had sold 10 tapes, her net...
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