The ice skating rink class charges an hourly fee for skating and $3 to rent skates for the day. Gillian rented skates and skates for 3 hours and was charged $21. Which equation represents the coast, c (x), of ice skating as a function of x, the number of hours of skating?

c (x) = 3 + 6x

Step-by-step explanation:

Let us assume that the ice skating rink class charges an hourly fee of $R for skating and $3 to rent skates for the day.

Now, Gillian rented skates and skates for 3 hours and was charged $21.

So, 3 + 3R = 21

⇒ 3R = 18

⇒ R = $6 per hour

Therefore, the equation represents the cost, c (x), of ice skating as a function of x. the number of hours of skating will be

c (x) = 3 + 6x (Answer)