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Mathematics 11 Online
OpenStudy (anonymous):

HELP Serenity Spa charges $57 for a one-hour massage. They charge $0.80 for each additional minute over an hour. If x represents the number of minutes over one hour, which of the following equations represents the cost of a massage? a y = 0.8x + 57 b y = -0.8x + 57 c y = 0.8x + 57.8 d y = 57.8x

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