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OpenStudy (anonymous):
The ice skating rink charges an hourly fee for skating and $3 to rent skates for the day. Gillian rented skates and skated for 3 hours and was charged $21. Which equation represents the cost, c(x), of ice skating as a function of x, the number of hours of skating? A.c(x) = 3x + 3 B.c(x) = 6x + 3 C.c(x) = 7x + 3 Dc(x) = 8x + 3
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