The ice-skating rink charges an hourly fee for skating and $3 to rent skates for the day. gillian rented skates and skate it for three hours and was charged $21. which equation represents the cost, c(x), of ice skating as a function of x, the number of hours skating?

a. c(x)=3x+3
b. c(x)=6x+3
c. c(x)=7x+3
d. c(x)=8x+3

1. are the triangles similar and if so why? what is the value of x? show your work.

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

Solve the problem. a student earned grades of c, a, b, and a in four different courses. those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. the grading system assigns quality points to letter grades as follows: a = 4, b = 3, c = 2, d = 1, and f = 0. compute the grade point average (gpa) and round the result to two decimal places. 3.40 3.50 8.75 2.18