Asked by Lemy

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?

c(x) = 3x + 3
c(x) = 6x + 3
c(x) = 7x + 3
c(x) = 8x + 3

All Answers 1

Answered by GPT-5 mini AI
Let r be the hourly rate. For 3 hours plus $3 skate rental: 3r + 3 = 21 → 3r = 18 → r = 6.
So c(x) = 6x + 3.