Question

The ice skating rink charges an hourly fee for skating and 3$ to rent skates for the day. Gillian rented skates and skated for 2 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
D. C(x)=8x+3

Answer 1

Its B= C(x)=6x+3

Explanation:

21 - 3 is 18

If gillian skated for three hours, then each hour is six dollars.

if x equals the number of hours then we would plug in 3 for x

C(x)= ?(3) + ?

each hour is six dollars so we plug in 6 right next to x

C(x)= 6(3) + ?

The total price is 18 plus 3 because he borrowed the skates so our final answer is 21 dollars

C(x)=6x+3

Answer 2

It starts with a $3 dollar charge. If he was charged 21, that means that 18 of those dollars were from the time he spent there. That means that it is $9 per hour and none of the answers upthere are correct

It should be c(x)=9(x)+3