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 charged $21. which equation represents the cost, c(x), of the ice skating as a function of x, the number of hours of skating.

Step-by-step explanation:

Rent of skates for day =$3

Gillian rented skates and skated for 3 hours and charged $21.

So, Total charge including rent = 21

So , Total charge excluding rent = 21-3=$18

So, charge for 3 hours = 18

So, Charge for 1 hour =

So, cost for x hours = 6x

So, total cost for x hours including rent = 6x +3

Let C(x) denotes the total cost

So,

Hence The equation represents the cost, c(x), of the ice skating as a function of x, the number of hours of skating is

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?