Question

Isaac has spent $20 to set up cable service and the monthly fee is $54.95. Write an equation to represent the total amount it costs, C(t) to have cable service if t stands for the number of months the service has been used.
Use functional notation and use only numbers, variables, and mathematical symbols. Using any additional symbols, such as $, will cause auto grade to mark your answer wrong.

Answer 1

Do 54.95 + 20.00 and you get 80.95

Answer 2

C(t)=54.95(t)+20. 20 dollars is your fixed rate. It will never change. The rest of the function is 54.95 dollars a month multiplied by t months depending on how long he uses cable.