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Mathematics, 02.02.2021 01:00 felalv4444

If Sarah works at the concession stand for 2 hours, she'll earn $15.50, but if she works for 4 hours, shell earn $31.00. Find the rate of change.

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If Sarah works at the concession stand for 2 hours, she'll earn $15.50, but if she works for 4 hours...
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